LA1 Introduction To Information & Communication Technology

1.0

INFORMATION AND COMMUNICATION TECHNOLOGY

INTRODUCTION
TO INFORMATION AND
COMMUNICATION TECHNOLOGY
LESSON 1
INTRODUCTION TO INFORMATION AND COMMUNICATION
TECHNOLOGY (ICT)

EVOLUTION OF COMMUNICATION
Communication has improved and evolved to facilitate our daily activities. In
the 21st century, everything related to communication utilizes technology to
‘send out’ or disseminate information to a wider audience. Information can
be ‘sent out’ in many ways. The inventions of cellular phones, television and
other electronic devices are important in enhancing communication.

WHAT IS ICT?
ICT is the technology required for information processing, in particular, the
use of electronic computers, communication devices and software
applications to convert, store, protect, process, transmit and retrieve
information from anywhere, anytime.

INFORMATION
Information refers to the knowledge obtained from reading, investigation,
study or research.

1

1.0


The tools to transmit information are the telephone, television and radio.

We need information to make decisions and to predict the future. For
example, scientists can detect the formation of a tsunami using the latest
technology and warn the public to avoid disasters in the affected areas.
Information is knowledge and helps us to fulfill our daily tasks. For example,
forecasting the stock exchange market.

COMMUNICATION

Communication is an act of transmitting messages. It is a process whereby
information is exchanged between individuals using symbols, signs or verbal
interactions. Previously, people communicated through sign or symbols,
performing drama and poetry. With the advent of technology, these ‘older’
forms of communication are less utilised as compared to the use of the
Internet, e-mail or video conferencing.

Communication is important in order to gain knowledge. With knowledge, we
are more confident in expressing our thoughts and ideas.
2

1.0


TECHNOLOGY
Technology is the use of scientific knowledge, experience
and resources to create processes and products that fulfill
human needs. Technology is vital in communication.
Aiding Communication
Telephone and fax machines are the devices used in
extending communication.
Spreading Information
To broadcast information such as news or weather reports
effectively. Radio, television, satellites and the World Wide
Web (www) are powerful tools that can be used.

TECHNOLOGY TIMELINE
Technology

Year
In 3500 BC, the Sumerians
developed cuneiform writing.

In 1500 BC, the Phoenicians
developed the alphabet

In 105 BC, Tsai Lun of China
invented paper.

In 1454, the first printing began
with the creation of a printing
machine.

3

1.0


In 1793, the telegraph line was
invented.

In 1876, the first telephone was
introduced.

In 1925, television was made
known to public.

In 1941, the computer was
created.

In 1958, the photocopier machine
was introduced.

4

1.0


In 1963, the communication
satellite was
introduced.

In 1969, the first Internet known
as ARPANET was introduced.

LESSON 2
EVOLUTION OF COMPUTERS
In the early years, before the computer was invented, there are several
inventions of counting machines.
Year
200
BC

CHINESE ABACUS
500
BC

EGYPTIAN ABACUS

5

1.0


1620

JOHN NAPIER

NAPIER'S BONES

BLAISE PASCAL

PASCALINE

1653

1673

LEIBNIZ'S RECHNER
GOTTFRIED WILHELM VON
LEIBNIZ
1801

JOSEPH MARIE JACQUARD

6

WEAVING LOOM

1.0


1823
823

MECHANICAL CALCULATOR
MACHINE

CHARLES BABBAGE
1941

HARVARD UNIVERSITY

MARK 1

COMPUTER GENERATIONS
FIRST GENERATION (1940-1956)
The first generation of computer were huge, slow, expensive and often
unreliable. In 1946, two Americans, Presper Eckert and Willian Mauchly build
the ENIAC (Electronic Numerical Integrator and Computer). It use vacuum
tube instead of mechanical switches of the MARK 1.

Vacuum tube
MARK 1
Presper Eckert

Willian Mauchly

In 1951, Eckert and Mauchly build the
UNIVAC, which could calculate at the
rate of 10,000 addition per seconds.
UNIVAC – UNIVERSAL AUTOMATIC COMPUTER

7

1.0


Hardware Technology
New invention of hardware were needed with the new computer technology.
Technology
VACUUM TUBE

Details
The vacuum tube was an extremely
important step of the advancement of
computers. In a computer, a vacuum tube
which is an electronic tube about the size of
light bulbs, was used as the internal
computer components. Thousands of them
were used.

PUNCHED CARD
Punched card was used to store data.

MAGNETIC TAPE
Magnetic tape was introduced in 1957. It
was a faster and a more compact method of
storing data. Using magnetic tape became
more reliable and cost-effective.
Problems
• the vacuum tubes generated a great deal of heat causing many
problems in temperature regulation and climate control
• the tubes also burnt out frequently
• people operating the computer did not know that the problem was in
the programming machine
• the second generation computer scientists invented something new
due to lots of problem created by vacuum tubes

SECOND GENERATION (1956-1963)
The famous computer scientists during the second generation era were:

The creation of transistor spark the production of a wave of second
generation computer. Transistor was small devices use to transfer electronic
8

1.0


signals across a resister. Transistors had many advantages compared to
other hardware technology.
•
•
•
•
•

transistors were smaller than vacuum tubes
they needed no warm up time
consumed less energy
generated much less heat
faster and more reliable

THIRD GENERATION (1964-1971)
In the third generation era, the IBM 370 series were
introduced in 1964. It came in several models and
sizes.It was used for business and scientific programs.
Other computer models introduced were CDC 7600
and B2500.
The development of integrated circuit (IC), signal the
beginning of the third generation computers. Silicone
chips were manufactured in 1961 at the Silicone Valley.
Then came the integrated circuit technology, which had
reduced the size and cost of computers.
It is a complete electronic circuit on a small chip of silicone. Which is also
known as semi conductor. Other than that, the Magnetic Core Memory
was replaced by a device called the microchip. Also the first 256 bit RAM
was introduced and it was the basis for development of 1K bit RAM.
Advantages
A new concept in this generation was that of a family of computer which
allowed computer to be upgraded and expanded as necessary.
•
•
•

Silicone chips were reliable, compact and
cheaper.
Sold hardware and software separately
which created the software industry.
customer service industry flourished
(reservation and credit checks)

FOURTH GENERATION (1971-PRESENT)
It took only 55 years for the 4 generations to
evolve. The growth of the computer industry
developed technologies of computer inventions.
There are many types of computer models such as:

9

1.0

•
•
•
•

Apple Macintosh
IBM
DELL
ACER

In 1971 Intel created the first microprocessor. In 1976, Steve Jobs built the
first Apple computer. Then, in 1981, IBM introduced its first personal
computer.

Steve Jobs

Bill Gates

Micheal Dell

During the fourth generation, hardware technology such as silicone chips,
microprocessor and storage devices were invented. A microprocessor is a
specialized chip which is developed for computer memory and logic.

Microprocessor

Silicone Chips
The microprocessor is a large-scale integrated circuit which contained
thousands of transistors. The transistors on this one chip are capable of
performing all of the functions of a computer's central processing unit.
Advantages
• Computers became 100 times smaller than ENIAC (Electronic
Numerical Integrator and Computer) the first computer
• Gain in speed, reliability and storage capacity
• Personal and software industry boomed

FIFTH GENERATION (PRESENT & BEYOND)
The fifth generation computers are technologically
advance and are still being development to become
more efficient.
The inventions of new hardware technology in the
fifth generation have grown rapidly including many
other modern computer devices such as :
10

1.0

•
•
•
•
•
•

silicone chips
processor
robotics
virtual reality
intelligent systems
programs which translate languages

NEW ERA COMPUTER
After the fifth generation computer, the technology of computer has become
more advanced, modern and sophisticated. The latest invention in the era of
computers are :
•
•
•
•
•

Super Computers
Mainframe Computers
Mini Computers
Personal Computers
Mobile Computers
Mini Computers

Mobile Computer

Mainframe Computers
Super Computers
In the new era of computers, expert system
such as teleconferencing and speech-recognition
system have been invented as part of modern
world communication tools.

11

Personal Computers

1.0


LESSON 3
USAGE OF ICT IN DAILY LIFE

EDUCATION

Today, most schools and higher educational institutions have computers in
the classroom for teacher and students. In education, teachers, students,
researchers and school administrators benefits from the usage of ICT.
Teachers use computers to
research for teaching materials,
participate in online forums and
online conferences as well as
to aid their teaching.

Teachers
Students use the computers as a
reference tool. They use
computers to browse the
Internet to look for information.

Students
12

1.0


Researchers use computers to
collect and process data.

Researchers
School administrators use
computers for administrative
purposes to make sure that the
entire operation runs smoothly.

School administrators

BANKING
The computer is the nerve centre of the
banking system around the world. It functions
to control the entire banking system that also
includes 'Electronic Banking Services'.
Electronic banking provides 24 hour services.
The services include :
•
•
•
•
•
•

Automated Teller Machine (ATM)
Cheque Deposit
Electronic Fund Tranfer
Direct Deposit
Pay by phone system
Personal computer banking/ internet
banking

In the banking sector, customers, businessman
and bank administrator benefits from the
usage of ICT.
13

1.0


Customers can make any
transactions at the 24 hour
service centres or via online.These
services allow them to do
transaction at anytime they want.
Customers
Businessmen can save their time
by using the online services
offered by banks. They can access
company accounts for
loan applications, business
transactions and update on their
cash flow at any time.
Businessmen
Bank administrators can oversee
the entire banking activities such
as reconciliations, inter-branch
transactions (IBT), telegraphic
transfer and others by referring to
the banking system.
Bank administrators

INDUSTRY
Computers are used to facilitate production
planning and control systems, to support chain
management and to help in product design in the
industrial sector.In the industrial sector ,workers,
researchers and administrator benefits from the
usage of ICT.
Workers use machines that are
connected to computers to
operate. In some productions,
robots are used to take over
jobs that are dangerous to the
workers.
Workers

14

1.0


Researchers use computers to
analyse and collect research data
for future reference.

Researchers
Administrators use computers to
oversee the entire operations in
the plant or factory to detect
specific errors or defects that
occurred in the process.
Administrators

E-COMMERCE
E-commerce helps in boosting the economy. It
makes buying and selling activities easier, more
efficient and faster. For this application,
computers, Internet and shared software are
needed.
In the e-commerce sector ,customers r, suppliers and employees benefits
from the usage of ICT.
Customers use computers to be
connected online with suppliers to
purchase products. This method
can save time and cost
as they do not have to go to any
outlets.
Customers

15

1.0


Suppliers use computers to keep
track of their transactions. All
products are bar coded and can be
read by the computer
scanner to help in determining
prices and managing inventory.
Suppliers
Employees use computers and
telephones to communicate with
their customers for any enquiries.
The system helps employees to
get the latest updates on
inventory to be informed to the
customers.
Employees

OTHER SECTOR

16

1.0


LESSON 4
COMPUTERISED AND NON-COMPUTERISED SYSTEMS

COMPUTER SYSTEM
A system is an arrangement of elements that when
it is put together it becomes an organised and
established procedure. A system typically consists
of components connected together in order to
facilitate the flow of information, matter or energy.
A computer system consists of a set of hardware and software which
processes data in a meaningful way.

EDUCATION

•
•

education is the science of teaching and learning of specific skills
it also imparts knowledge, good judgement and wisdom

BANKING SYSTEM
BANKING BEFORE ICT
• banking was done manually by taking
deposits directly
• transactions can only be made during
working hours
• takes time to approve any loan applications
BANKING WITH ICT
• all transactions are done by computers
• transaction can be done at anytime and place
• online services, phone banking system, credit
cards are available

17

1.0


INDUSTRY
INDUSTRY BEFORE ICT
Production was slow because everything was done
manually and totally depended on human labour.
INDUSTRY WITH ICT
Computers and telecommunications industry became
very popular and profitable since production can be
increased through an all day operation.

COMMERCE
Commerce is an activity of exchanging, buying and selling of commodities
on a large scale involving transportation from place to place.
COMMERCE BEFORE ICT
• Trading was made using the barter system and it
was then later developed into currency.
• Advertisement was in the form of word of mouth,
billboards and printed flyers.
• Trading globally was extremely slow, late and
expensive. Traders had to find ways to market local
products in the global market.
COMMERCE WITH ICT
E-commerce plays an important role in the economic
scene. It includes distribution, buying, selling and
servicing products that are done electronically.

LESSON 5
THE IMPACT OF ICT ON SOCIETY

FASTER COMMUNICATION SPEED
In the past, it took a long time for any news or
messages to be send. Now with the Internet, news or
messages are sent via e-mail to friends, business
partners or to anyone efficiently. With the capability of
bandwidth, broadband and connection speed on the
Internet, any information can travel fast and at an
instant. It saves time and is inexpensive.

18

1.0


LOWER COMMUNICATION COST

Using the Internet is cost-effective than the other modes of communication
such as telephone, mailing or courier service. It allows people to have
access to large amounts of data at a very low cost. With the Internet we do
not have to pay for any basic services provided by the Internet.
Furthermore, the cost of connection to the Internet is relatively cheap.

RELIABLE MODE OF COMMUNICATION
Computers are reliable. With the internet, information could be accessed and
retrieved from anywhere and at anytime. This makes it a reliable mode of
communication. However, the input to the computer is contributed by
humans. If the data passed to the computer is faulty, the result will be
faulty as well. This is related to the term GIGO.
GIGO is a short form for Garbage In Garbage Out. It
refers to the quality of output produced according to the
input. Normally bad input produces bad output.

EFFECTIVE SHARING OF INFORMATION
With the advancement of ICT, information can be shared by people all
around the world. People can share and exchange
opinions, news and information through discussion
groups, mailing list and forums on the Internet. This
enable knowledge sharing which will contribute to the
development of knowledge based society.

19

1.0


PAPERLESS ENVIRONMENT

ICT technology has created the term paperless environment. This term
means information can be stored and retrieved through the digital medium
instead of paper. Online communication via emails, online chat and instant
messaging also helps in creating the paperless environment.

BORDERLESS COMMUNICATION

Internet offers fast information retrieval, interactivity, accessibility and
versatility. It has become a borderless sources for services and information.
Through the Internet, information and communication can be borderless.

SOCIAL PROBLEMS

There are some negative effects of ICT. It has created social problems in the
society. Nowadays, people tend to choose online communication rather than
having real time conversations. People tend to become more individualistic
and introvert.

20

1.0


Another negative effect of ICT is :
• fraud
• identity theft
• Pornography
• Hacking
This will result a moral decedent and generate threads to the society.

HEALTH PROBLEMS

A computer may harm users if they use it for long hours frequently.
Computer users are also exposed to bad posture, eyestrain, physical and
mental stress. In order to solve the health problems, an ergonomic
environment can be introduced. For example, an ergonomic chair can
reduces back strain and a screen filter is used to minimize eye strain.

21

1.0


COMPUTER ETHICS
AND LEGAL ISSUES
LESSON 6
COMPUTER ETHICS

ETHICS IN GENERAL
A guideline is needed to stop the current technology products from being
exploited for example replicating original CDs and selling them as pirated
software, this unethical behaviour can be controlled by the code of conducts.
Unethical refers to any code of conducts that are not conforming to
approved standards of social or professional behaviour.
Computer ethics is a system of moral standards or values used as a
guideline for computer users.

THE TEN COMMANDMENTS OF COMPUTER ETHICS
The United States Institute of Computer Ethics has come out with the Ten
Commandments of Computer Ethics. These principles consider the effective
code of conducts for the proper use of information technology. The Ten
commandments of computer ethics are :
1.
2.
3.
4.
5.
6.

You shall not use a computer to harm other people.
You shall not interfere with other people's computer work.
You shall not snoop around in other people's computer files.
You shall not use a computer to steal.
You shall not use a computer to bear false witness.
You shall not copy or use proprietary software for which you
have not paid.
7. You shall not use other people's computer resources without
authorisation or proper compensation.
8. You shall not appropriate other people's intellectual output.
9. You shall think about the social consequences of the program
you are writing or the system you are designing.
10. You shall always use a computer in ways that ensure
consideration and respect for your fellow humans.

GUIDELINES ON THE E-MAIL AND INTERNET USAGE
Some guidelines from the Department of Public Services of Malaysia:
•
•

use only individual e-mail address to forward individual opinion
keep the identity name and password a secret to avoid the
misuse of your e-mail without your knowledge
22

1.0

•
•
•
•
•
•
•

e-mail must be active to promptly reply the necessary actions
needed for any matters
ensure the total mail kept in the box is within the computer
storage capacity
scan files regularly to avoid the transmission of virus from one
computer to another
do not send e-mails that contain classified information which can
be used to tarnish other people or country
choose a suitable time to search the Internet to save access
time and cost
beware of prohibited sites which could affect one's moral,
organisation or nation
print only relevant documents that you think can be used in
future to save cost

UNETHICAL COMPUTER CODE OF CONDUCTS
With the advancement of ICT, it is easy for anyone to retrieve your
information from the Internet. You may not realise that when you fill a form
on the Internet, your information may be exposed and stolen.
Examples of unethical computer code of conducts include:
•
•
•
•
•

modifying certain information on the Internet, affecting the
accuracy of the information
selling information to other parties without the owner’s
permission
using information without authorization
involvement in stealing software
invasion of privacy

Intellectual property refers to any product of human intellect that is unique
and has value in the market place. This covers ideas, inventions, unique
name, computer program codes and many more.

ETHICAL COMPUTER CODE OF CONDUCTS
Examples of ethical computer code of conducts include:
•
•
•

sending warning about viruses to other computer users
asking permission before sending any business advertisements
to others
using information with authorization

23

1.0


LESSON 7
THE DIFFERENCES BETWEEN ETHICS AND LAW

DEFINITION OF ETHICS
In general, ethics is a moral philosophy where a
person makes a specific moral choice and sticks to
it. On the other hand, ethics in computing means
moral guidelines to refer to when using the
computer and computer networks. This includes
the Internet.

DEFINITION OF LAW
Law is a legal system comprising of rules and principles that govern the
affairs of a community and controlled by a political authority.
Law differs from one country to another. In the era of
technology, computer law is needed to clarify goods or
actions that fall under the computer law. Computer law
refers to all areas in law that requires an understanding
of computer technology such as hardware, software and
Internet.
Examples of laws of computing in Malaysia include the Malaysian
Communication and Multimedia Act, the Computer Crime Act 1997 and the
Telemedicine Act 1997.

WHY DO WE NEED ETHICS AND LAW IN
COMPUTING?
•
•
•

Respecting Ownership
Respecting Privacy
Respecting Property

RESPECTING OWNERSHIP
We must respect ownership by not stealing other people’s work either by
duplicating or distributing it. Duplicating and distributing copies of audio
tapes, video tapes and computer programs without permission and
authorisation from the individual or company that created the program
are immoral and illegal.
RESPECTING PRIVACY AND CONFIDENTIALITY
We should respect other people's privacy and confidentiality by refraining
ourselves from reading their mails or files without their permission. If we do
so, it is considered as violating an individual’s rights to privacy and
confidentiality.
24

1.0


RESPECTING PROPERTY
Property here means ownership. Since an individual data and information
are considered as property, therefore, an act of tampering and changing
electronic information is considered as vandalism and disrespect for other
people’s property.

SIMILARITIES BETWEEN ETHICS AND LAW
Both ethics and law are complimentary to each other and are made:
•
•
•

to guide user from misusing computers
to create a healthy computer society, so that computers are
used to contribute to a better life
to prevent any crime

DIFFERENCES BETWEEN ETHICS AND LAWS
ETHICS
GUIDELINE
MORAL STANDARDS

As a guideline to computer users.
Ethical behaviour is judged by moral
standards.
Computer users are free to follow or
ignore the code of ethics.
No punishment for anyone who
violates ethics.
Universal, can be applied anywhere,
all over the world.
To produce ethical computer users.

FREE TO FOLLOW
NO PUNISHMENTS
UNIVERSALS
PRODUCE ETHICAL COMPUTER
USERS
IMMORAL

Not honouring computer ethics
means ignoring the moral elements
(immoral).

LAW
CONTROL
JUDICIAL STANDARDS
MUST FOLLOW
PENALTIES, IMPRISONMENTS
AND OTHER PUNISHMENTS
DEPENDS ON COUNTRY
PREVENT MISUSING OF COMPUTERS
CRIME

As a rule to control computer users.
Law is judged by judicial standards.
Computer users must follow the
regulations and law.
Penalties, imprisonments and other
punishments for those who break the
law.
Depends on country and state where
the crime is committed.
To prevent misuse of computers.
Not honouring the law means
committing a crime.

25

1.0


UNETHICAL VS. LAW BREAKING CONDUCTS
Unethical:
•
•
•

using the office computer to do personal things
reading your friend’s e-mail without his or her permission
plagiarising and using materials from the Internet for your class
assignment without giving credit to the original author.

Law breaking:
•
•
•

sending a computer virus via e-mail
hacking into your school’s database to change your examination
results.
selling pirated software in a night market

LESSON 8
INTELLECTUAL PROPERTY RIGHTS

DEFINITION OF INTELLECTUAL PROPERTY
Intellectual Property refers to works created by inventors, authors and
artists. These works are unique and have value in the market place. In our
daily lives, we are surrounded by things that are protected by IP. Your
school bags, your shoes and even your socks are protected by Intellectual
Property rights. Nike, Bata or Adidas, for example, are all protected by a
group of legal rights.

INTELLECTUAL PROPERTY LAW
Intellectual Property laws cover ideas, inventions, literary creations, unique
names, business models, industrial processes, computer program codes and
more.

INVENTIONS PROTECTED BY INTELLECTUAL
PROPERTY LAWS
As businesses continue to expand globally, business owners must realise the
importance of getting professional advice on how to establish and safeguard
their intellectual property rights. These include :
•
•
•
•
•
•
•

Trademarks
Service marks
Trade/company names
Domain names
Geographical indications
Copyrights
Patents

Example : Protected by property law.
26

1.0


INTELLECTUAL PROPERTY PROTECTION
There are four types of Intellectual Property protection. They are patents for
invention, trademarks for brand identity, designs for product appearance
and copyright for material.
•
•
•
•

Patents for inventions
Trademarks for brand identity
Design for product appearance
Copyright for material

Patents for inventions
Utility, design or plant patents that protect inventions and improvements to
existing inventions
Trademarks for brand identity
Words, names, symbols, devices and images that represent products, goods
or services.
Design for product appearance
Literary and artistic material, music, films, sound recordings and roadcasts,
including software and multimedia.
Copyright for material
The features of, in particular,the lines, contours, colours,shape, texture or
material of the product itself or its ornamentation.

27

1.0


LESSON 9
PRIVACY IN COMPUTER USAGE

WHAT IS PRIVACY?
Privacy in IT refers to data and information privacy.
Data refers to a collection of raw unprocessed facts, figures and
symbols. Then, computer is used to process data into information. In
general, data include texts, numbers, sounds, images and video.
Information privacy is described as the rights of individuals and companies
to deny or restrict the collection and use of information about them.

WAYS COMPUTER TECHNOLOGY THREATEN OUR
PRIVACY
Every time you click on an advertisement or register a software product
online, your information is entered into a database. Computer technology
can also threaten privacy through spam. Do you know what spam is? Spam
is unsolicited e-mail messages, advertisements or newsgroup postings sent
to many recipients at once.
How does computer technology threaten the privacy of our data?
It is done through:
•
•
•

Cookies
Electronic profile
Spyware

Computer technology threatens our privacy through electronic profiling. For
example, when we fill out a form such as a magazine subscription,
purchasing products or contest entry form on the Internet, this data is kept
in the database. It will include age, address, marital status and other
personal details.
Cookies
• are used to identify users by web casting,
e-commerce and other web applications
• contain user information and are saved in the
computer hard disk
• are used by some websites to store passwords
and track how regularly we visit a website,
that’s how we become potential targets for web
advertisers
• enable web sites to collect information about
your online activities and store them for future
use, then the collected details will be sold to any company that
requests for it.
28

1.0


Electronic profile
• electronic profile is the combining of data in a
database that can be sold to the Internet by the
company to the interested parties.
• this database is in a form such as magazine
subscription or product warranty cards that
had been filled by online subscribers.
• the information in electronic profile includes
personal details such as your age, address and marital status.
Spyware
• refers to a program that collects user
information without the user’s knowledge.
• can enter computers, sneaking in like a virus.
• is a result of installing new programs.
• communicates information it collects to some
outside source while we are online.

WHY DO WE NEED PRIVACY?
We need privacy for anonymity. For example, the Internet creates an
elaborate trail of data detailing a person surfing on the Web because all
information is stored inside cookies. We do not want our trail to be detected.
We also need privacy for confidentiality. For example, online information
generated in the course of a business transaction is routinely used for
a variety of other purposes without the individual’s knowledge or consent.
We do not want our private lives and habits exposed to third parties.

CAN PRIVACY BE PROTECTED?
Privacy can be protected by:
(a) Privacy law
The privacy laws in Malaysia emphasises on the following:
• Security Services to review the security policy
• Security Management to protect the resources
• Security Mechanism to implement the required security services
• Security Objects, the important entities within the system
environment
(b) Utilities software
Example: anti-spam program, firewall, anti-spyware and antivirus.

29

1.0


LESSON 10
AUTHENTICATIONS
Authentication is a process where users verify that they are who they say
they are. The user who attempts to perform functions in a system is in fact
the user who is authorised to do so.
For Example : When you use an ATM card, the machine will verify the
validation of the card then the machine will request for a pin number. This
is where the authentication process takes place.
AUTHENTICATION

Identification
present what the user has (e.g. smart card)

Not valid (F)

Verification
verify the
validity of
the ID

Access
denied

Valid (T)

Valid (T)

Identification
present what the user is (e.g. biometric)

False
Authentication
authenticate
who
the user is
True

Access granted

30

1.0


METHODS OF AUTHENTICATION
There are two commonly used authentication methods, which are biometric
device and callback system.
Biometric device is a device that
translates personal characteristics
into a digital code that is compared
with a digital code stored in the
database.
Callback system refers to the checking system that authenticates the user.

BIOMETRIC DEVICES

Fingerprint Recognition
In order to prevent fake fingers from being used, many
biometrics fingerprint systems also measure blood flow, or check for
correctly arrayed ridges at the edges of the
fingers.

Facial Recognition
Facial recognition analyses the characteristics of an
individual's face images captured through a digital video
camera. Facial recognition is widely used, touted as a
fantastic system for recognising potential threats
(whether terrorists, scam artists, or known criminals).

Hand Geometry Scanning
Hand scanning involves the measurement and analysis
of the shape of one's hand.
Unlike fingerprints, the human hand isn't unique.
Individual hand features are not descriptive enough for
identification. It is possible to devise a method by
combining various individual features and measurements of fingers and
hands for verification purposes.

Iris Scanning
31

1.0


Iris scanning analyses the features that exist in the
coloured tissues surrounding the pupil which has more than 200 points that
can be used for comparison, including rings, furrows and freckles.
The scans use a regular video camera and can be done from further away
than a retinal scan.It will work perfectly fine through glasses and in fact has
the ability to create an accurate enough measurement that it can be used
for identification purposes. The accuracy of this method is excellent while
the cost involved is high.

Retinal Scanning
Retinal biometrics involves the scanning of retina and
analysing the layer of blood vessels at the back of the
eye.
Retinal scanning involves using a low-intensity light
source and an optical coupler and can read the patterns
at a great level of accuracy.
Retina scanning requires the user to remove glasses, place their eye close to
the device, and focus on a certain point. Whether the accuracy can outweigh
the public discomfort is yet to be seen.
The accuracy in retinal scanning is very good and the cost involved is fair.

Voice Recognition
Voice recognition system compares a person’s live
speech with their stored voice pattern.
Voice recognition biometrics requires user to speak into
a microphone. What he speaks can be his password or
an access phrase.
Verification time is approximately 5 seconds. To prevent recorded voice
use, most voice recognition devices require the high and low frequencies of
the sound to match, which is difficult for many recording instruments to
recreate well. Also, some devices generate random number of sequences for
verification.
The accuracy in voice recognition is fair and the cost involved is very
reasonable.

Signature Verification System
Signature verification system uses special pen and
tablet. After pre-processing the signature, several
features are extracted.
The authenticity of a writer is determined by comparing
an input signature to a stored reference set (template)
32

1.0


consisting of three signatures.
The similarity between an input signature and the reference set is computed
using string matching and the similarity value is compared to a threshold.
The accuracy in signature verification system is fair and the cost involved is
excellent.

CALLBACK SYSTEM
The callback system is commonly used in the bank
operation and business transaction.
For example, when you book for the taxi service, the
operator will ask you to hang up and she will call you
back to confirm for the service required.

WHY IS AUTHENTICATION IMPORTANT?
Authentication is important in order to safeguard against the unauthorised
access and use.

LESSON 11
VERIFICATIONS

VERIFICATION
Verification is the act of proving or disproving the correctness of a system
with respect to a certain formal specification.
IDENTIFICATION
present what the user has (e.g ATM card)
Access Granted
Valid

VERIFICATION
verify the validity of the ID

Not Valid
IDENTIFICATION
present what the user has (e.g pin number)

METHODS OF VERIFICATION
33

Access Denied

1.0


There are two methods commonly used in verification, which are user
identification and processed object.
User identification refers to the process of validating the user.
Processed object refers to something the user has such as identification
card, security token and cell phone.

USER IDENTIFICATION
The examples of validating process using the user identification are:
•
•
•

Key in the user name to log-in to a system and the
system will verify whether the user is valid or invalid
user
Show the exam slip to verify that you are the valid
candidate for the exam.
show a passport before departure.

PROCESSED OBJECT
The examples of validating process using the processed object are:
• the policeman will check on the driver’s license to
identify the valid driver
• employees have to swipe their security card to enter
the building
• buy blouses at the mall using a credit card

LESSON 12
CONTROVERSIAL CONTENT

34

1.0


CONTROVERSIAL CONTENT
A controversial content is information that causes disagreement in opinions
and may cause the disruption of peace because different people or culture
will have different views about the contents.

ISSUES ON CONTROVERSIAL CONTENTS
The issues on controversial contents are always focusing on pornography
and slander. Malaysia considers pornography and slander as illegal.
Pornographic and slanderous activities can be in the forms of
plots and actions displayed on video games, controversial
rhythm or lyrics of music, controversial contents of books and
controversial issues on religion and philosophy.
Pornography Creative activity (writing or pictures or films etc.) of no literary or artistic
value other than to stimulate sexual desire.
Slander Oral communication of false statements injurious to a person's reputation.
A false and malicious statement or report about someone.

PORNOGRAPHY
What is pornography? Why is pornography considered “negative” content?

Both pictures are very cute pictures of innocent babies. Neither can be
considered pornographic by normal standards.

DEFINITION OF PORNOGRAPHY
The definition of pornography is any form of media or material (like books or
photographs) that depicts erotic behaviour and is intended to cause sexual
excitement.
Pornography tends to exploit men, women and children in a distasteful
manner.

SLANDER
Slander is another example of controversial content.

35

1.0


Slander is a legal term for false and malicious statement (meaning knowing
that it is false, or “reckless disregard” that it was false) about someone.
Examples :
You wrote an e-mail that a fellow classmate was having an affair with a
teacher, even though it was not true. You then sent it to five other friends.
Ahmad is a muslim. One day, he received a “spam” e-mail stating that his
favourite soda drink “Soda Moda” uses non-halal food colouring, but he does
not know if the source of the content is credible or true. He decides to
forward the e-mail to 50 of his friends.
Chin Wei spreads a rumour that a Government Minister is receiving bribes
from an enemy government.

IMPACTS ON MALAYSIAN SOCIETY
What can you conclude about the impact of controversial content on the
Malaysian society?
Pornography
• can lead to criminal acts such as exploitation of women and children
• can lead to sexual addiction or perversion
• can develop low moral value towards other men, women or children
• can erode good religious, cultural and social beliefs and behaviour
Slander
• can develop into a society that disregards honesty and truth
• can develop bad habit of spreading untruths and rumours
• can lead to unnecessary argument
• can cause people to have negative attitudes towards another person

LESSON 13
THE PROCESS OF INTERNET FILTERING

INTERNET FILTERING
It is our responsibility to ensure that the teenagers are
protected from these corruptions of the mind by filtering
access to the Internet.Internet filtering is a process that
prevents or blocks access to certain materials on the
Internet.
It is our responsibility to ensure that the teenagers are protected from
these corruptions of the mind by filtering access to the Internet.
What is Internet filtering?
Internet filtering is a process that prevents or blocks access to certain
materials on the Internet. Filtering is most commonly used to prevent
children from accessing inappropriate material and to keep employees
productive on the Internet.
36

1.0


CONTROLLING ACCESS TO THE INTERNET
Controlling access to the internet by means of filtering software has become
a growing industry in Malaysia and elsewhere. Its use has increase as the
mandatory response to the current plague of society, namely internet
pornography, politically incorrect site, hatred, violence, hate and in general
anything viewed to be unpleasant or threatening.
The current preferred method of choice to limit access on the Internet is to
filter content either by:
• keyword blocking
• site blocking
• web rating systems
These methods require software to be installed at a client of server level.

KEYWORD BLOCKING
One of the strategies is by using the keyword blocking
method. This method uses a list of banned words or
objectionable terms.
As the page is downloading, the filter searches for any of
these words. If found, it will block the page completely, stop downloading
the page, block the banned words and even shut down the browser.

SITE BLOCKING
•
•
•
•
•
•
•

software company maintains a list of ‘dubious Internet sites’
the software prevents access to any sites on this list
‘denial lists’ regularly updated
some software provides control over what categories of information
you block
Who decides what goes on the ‘denial list’ and what criteria are they
using?
can you keep track of the whole of the Internet?
filters can use both site blocking and word blocking

WEB RATING SYSTEMS
Web sites are rated in terms of nudity, sex, violence and language. The
Recreational Software Advisory Council (RSACI) is responsible for the rating
of the websites on the content on the internet.
37

1.0

•
•

ratings done either by the web page author or by the
independent bureau.
browsers set to only accept pages with certain levels of ratings.

LESSON 14
CYBER LAW

What is Cyber Law?
Cyber law refers to any laws relating to protecting the
Internet and other online communication technologies.

NEEDS FOR CYBER LAW
In the recent years, many concerns and issues were raised on the integrity
and security of information, legal status of online transactions, privacy and
confidentiality of information, intellectual property rights and security of
government data placed on the Internet.
Integrity and Security
of Information

Security of
Government Data
CYBER LAW

Legal Status of Online
Transactions

Intellectual Property
Rights
Privacy and Confidentially
of Information

These concerns and issues clearly indicate why cyber laws are needed in
online activities.

THE CYBER LAW ACTS IN MALAYSIA
The Malaysian Government has already passed several cyber laws to control
and reduce the Internet abuse.
These cyber laws include:
• Digital Signature Act 1997
• Computer Crimes Act 1997
• Telemedicine Act 1997
• Communications and Multimedia Act 1998
Beside these cyber laws, there are three other cyber laws being drafted.
•
•
•

Private Data Protection Bill
Electronic Government Activities Bill
Electronic Transactions Bill
38

1.0


DIGITAL SIGNATURE ACT 1997
The Digital Signature Act 1997 secures electronic
communications especially on the Internet.
Digital Signature is an identity verification standard that
uses encryption techniques to protect against e-mail
forgery. The encrypted code consists of the user’s name
and a hash of all the parts of the message.
By attaching the digital signature, one can ensure that nobody can
eavesdrop, intercept or temper with transmitted data.

COMPUTER CRIMES ACT 1997
The Computer Crimes Act 1997 gives protection
against the misuses of computers and computer
criminal activities such as unauthorised use of
programmes, illegal transmission of data or messages
over computers and hacking and cracking of computer
systems and networks.
By implementing the Computer Crimes Act 1997, users can protect their
rights to privacy and build trust in the computer system. At the same time,
the government can have control at a certain level over cyberspace to
reduce cyber crime activities.

TELEMEDICINE ACT 1997
The Telemedicine Act 1997 ensures that only qualified
medical practitioners can practice telemedicine and that
their patient's rights and interests are protected.
These act provides the future development and delivery
of healthcare in Malaysia.

COMMUNICATIONS AND MULTIMEDIA ACT 1998
The implementation of Communication and
Telecommunication Act 1998 ensures that information is
secure, the network is reliable and the service is
affordable all over Malaysia.
This Act also ensures high level of user's confidence in
the information and communication technology
industry.

39

1.0


LESSON 15
COMPUTER CRIMES

COMPUTER CRIMES
A computer crime is defined as any criminal activity that
is related to the use of computers. These activities
include computer fraud, copyright infringement,
computer theft and computer attack.

COMPUTER FRAUD
Computer fraud is defined as having an intention to take advantage over or
causing loss to other people, mainly on monetary basis through the use of
computers.
There are many forms of computer fraud which include e-mail hoaxes,
programme fraud, investment schemes, sales promotions and claims of
expertise on certain fields.
Students need to be aware of other computer frauds such
as health frauds, scams and hacking. Students will also
most likely get false information while researching
information on the Internet.

COPYRIGHT INFRINGEMENT
Copyright infringement is defined as a violation of the
rights secured by a copyright. Copyright infringement
involves illegal copy or reproduction of copyrights
material by the black market group. The open
commercial sale of pirated item is also illegal.
With the current technology, the most perfect copy of the original copy can
be downloaded from the internet.

COMPUTER THEFT
Computer theft is defined as the unauthorised use of
another person’s property with the intention to deny the
owner the rightful possession of that property or its
use.
Examples of computer theft include:
•
•
•

transfer of payments to the wrong accounts
tap into data transmission lines on database at no cost
divert goods to the wrong destination

40

1.0


COMPUTER ATTACK
Computer attack may be defined as any activities taken
to disrupt the equipment of computer systems, change
processing control or corrupt stored data.
Computer attack can be in the forms of:
•
•
•

physical attack that disrupt the computer facility or its
transmission lines.
an electronic attack that uses the power of electromagnetic
energy to overload computer circuitry.
a computer network attack that uses a malicious code to
exploit a weakness in software, or in the computer security
practices of a computer user

41

1.0


COMPUTER SECURITY
LESSON 16
COMPUTER SECURITY

DEFINITION OF COMPUTER SECURITY
Computer security means protecting our
computer systems and the information they
contain against unwanted access, damage,
destruction or modification.
We need to protect our computer from any
intruders such as hackers, crackers and script
kiddie.
We do not want strangers to read our e-mail, use our computer to
attack other systems, send forged e-mail from our computer, or examine
personal information stored on our computer such as financial statements.

TYPES OF COMPUTER SECURITY
Three types of computer security are:
a) hardware security
b) software security/data security
c) network security

a) HARDWARE SECURITY
Hardware security refers to security measures used
to protect the hardware specifically the computer
and its related documents.
The examples of security measures used to protect
the hardware include PC-locks, keyboard-locks,
smart cards and biometric devices.

b) SOFTWARE AND DATA SECURITY
Software and data security refers to the security
measures used to protect the software and the loss
of data files.
Examples of security measures used to protect the
software are activation code and serial number.

42

1.0


An example of security measure used to protect the loss of data files is the
disaster recovery plan method. The idea of this plan is to store data,
program and other important documents in a safe place that will not be
affected by any major destruction.

c) NETWORK SECURITY
The transfer of data through network has become a
common practice and the need to implement
network security has become significant.
Network security refers to security measures used
to protect the network system. One example of
network security measures is firewall. With firewall, network resources can
be protected from the outsiders.

PERSONAL COMPUTER SECURITY CHECKLIST
In order to make sure our computers are secured, here are the computer
security checklist to follow.
Do not eat, drink or smoke near the computer
Do not place the computer near open windows or doors
Do not subject the computer to extreme temperatures
Clean the equipment regularly
Place a cable lock on the computer
Use a surge protector
Store disks properly in a locked container
Maintain backup copies of all files
Stores copies of critical files off sites
Scan a floppy disk before you open it
Do not open any unknown email received

LESSON 17
INTRODUCTION COMPUTER THREATS
The computer is a great tool to store important information. In certain
cases, the information is very vital that losing it will harm the computer
system.
Computer threats can come from many ways either from human or natural
disasters. For example, when someone is stealing your account information
from a trusted bank, this threat is considered as a human threat. However,
when your computer is soaked in heavy rain, then that is a natural disaster
threat.

43

1.0


MALICIOUS CODE
Malicious code is also known as a rogue program. It is
a threat to computing assets by causing undesired
effects in the programmer’s part. The effect is caused
by an agent, with the intention to cause damage.
The agent for malicious code is the writer of the code,
or any person who causes its distribution. There are
various kinds of malicious code. They include virus, Trojan horse, logic door,
trapdoor and backdoor, worm and many others.

a) VIRUS
•

a program that can pass on the malicious
code to other programs by modifying them

•

attaches itself to the program, usually files
with .doc, .xls and .exe extensions

•

destroys or co-exists with the program

•

can overtake the entire computing system and spread to other
systems

b) TROJAN HORSE
•

a program which can perform useful and
unexpected action

•

must be installed by users or intruders
before it can affect the system’s assets

•

an example of a Trojan horse is the login script that requests for
users’ login ID and password

•

the information is then used for malicious purposes

44

1.0


c) LOGIC BOMB
•

logic bomb is a malicious code that goes
off when a specific condition occurs.

•

an example of a logic bomb is the time
bomb

•

it goes off and causes threats at a specified time or date

e) TRAPDOOR OR BACKDOOR
•

a feature in a program that allows
someone to access the program with
special privileges

f) WORM
•

a program that copies and spreads itself
through a network

Primary Differences Between Worms And viruses
Worm
Virus
Operates through the network
Spreads through any medium
Spreads copies of itself as a
Spreads copies of itself as a
standalone program
program that attaches to other
programs

HACKER
Hacking is a source of threat to security in computer.
It is defined as unauthorised access to the computer
system by a hacker.
Hackers are persons who learn about the computer
system in detail. They write program referred to as
hacks. Hackers may use a modem or cable to hack
the targeted computers.

NATURAL AND ENVIRONMENTAL THREATS
Computers are also threatened by natural or environmental disaster. Be it at
home, stores, offices and also automobiles. Examples of natural and
environmental disasters:
Flood
Fire
Earthquakes, storms and tornados
Excessive Heat
Inadequate Power Supply
45

1.0


THEFT
Two types of computer theft:
1) Computer is used to steal money, goods,
information and resources.
2) Stealing of computer, especially notebook and
PDAs.
Three approaches to prevent theft:
1) prevent access by using locks, smart-card or
password
2) prevent portability by restricting the hardware
from being moved
3) detect and guard all exits and record any
hardware transported

46

1.0


LESSON 18
SECURITY MEASURES
Today, people rely on computers to create, store and manage critical
information. It is important that the computer and the data they store are
accessible and available when needed. It is also important that users take
measures to protect their computers and data from lost, damage and
misused.
Security measures mean the precautionary measures taken toward possible
danger or damage. There are 6 type of security measures.

1) DATA BACKUP
Data Backup is a program of file duplication. Backups
of data applications are necessary so that they can
be recovered in case of an emergency.
Depending on the importance of the information,
daily, weekly or biweekly backups from a hard disk
can be performed.

47

1.0


2) CRYPTOGRAPHY
Cryptography is a process of hiding information by
altering the actual information into different
representation, for example, an APA can be
written as I? X.
Almost all cryptosystems depend on a key such as a
password like the numbers or a phrase that can be used to encrypt or
decrypt a message.
The traditional type of cryptosystem used on a computer network is called a
symmetric secret key system.

3) ANTIVIRUS
An antivirus program protects a computer against
viruses by identifying and removing any computer
viruses found in the computer memory, on
storage media or incoming e-mail files.
An antivirus program scans for programs that
attempt to modify the boot program, the operating
system and other programs that normally are read from but not modified.
IDENTIFYING VIRUS
Two technique are used to identify the virus.
VIRUS SIGNATURE
Also called a virus definition is a
specific pattern of the virus code.

INOCULATING A PROGRAM FILE
The antivirus program records
information such as the file size and file
creation date in a separate inoculation
file.
The antivirus program then uses this
information to detect if a virus tampers
with the data describing the inoculated
program file.

If an antivirus program identifies an infected file, it attempts to remove its
virus, worm or Trojan horse. If the antivirus program cannot remove the
infection, it often quarantines the infected file. Quarantine is a separate
area of a hard disk that holds the infected file until the infection can be
removed. This step ensures other files will not become infected. Patents for
inventions Utility, design or plant patents that protect inventions and
improvements to existing inventions

48

1.0


4) ANTI-SPYWARE
Spyware is a program placed on a computer without
the user’s knowledge. It secretly collects information
about the user.
The spyware program communicates information to
the outside source.
An anti-spyware application program sometime called tracking software or a
spybot is used to remove spyware.
Among of the popular anti-spyware programs are:
• Spybot Search and Destroy
• Ad-aware
• Spyware Blaster

5) FIREWALL
Firewall is a piece of hardware or software which
functions in a networked environment to prevent some
communications forbidden by the security
policy.
Firewall implement a security policy. It might permit
limited access from in or outside the network
perimeters or from certain user or for certain activities.

49

1.0


6) HUMAN ASPECTS OF SECURITY MEASURES
Human aspects refer to the user and also the intruder
of a computer system.
It is one of the hardest aspects to give protection to.
The most common problem is the lack of achieving a
good information security procedure.

LESSON 19
RELATIONSHIP BETWEEN SECURITY THREATS AND
SECURITY MEASURES
Security threats may come from in many forms. For example, when
someone is invading your account information from a trusted bank, this act
is considered as a security threat.
Security measures can be used to prevent this invader
from getting the account information. For example, the
bank can use a firewall to prevent unauthorised access to
its database.

SECURITY THREATS
Security threats may come from in many forms. For example, when
someone is invading your account information from a trusted bank, this act
is considered as a security threat.
Security measures can be used to prevent this invader from getting the
account information. For example, the bank can use a firewall to prevent
unauthorised access to its database.
50

1.0


MALICIOUS CODE THREATS VS. ANTIVIRUS AND
ANTI-SPYWARE
Security threats include virus, Trojan horse, logic bomb, trapdoor and
backdoor, and worm.
Antivirus and anti-spyware can be used to protect the computer from the
threats by:
limiting connectivity
allowing only authorised media for loading data and software
enforcing mandatory access controls
blocking the virus from the computer program

HACKING VS. FIREWALL
Hacking is an unauthorised access to the computer
system done by a hacker. We can use firewall or
cryptography to prevent the hacker from accessing
our computers.
A firewall permits limited access to unauthorised
users or any activities from the network environment. Cryptography is a
process of hiding information by changing the actual information into
different representation, for example, an APA can be written as 7&*.

NATURAL DISASTER VS. DATA BACKUP
The natural and environmental disasters may include:
• flood
• fire
• earthquakes
• storms
• tornados
Natural disasters may threaten a computer’s hardware and software easily.
Computers are also sensitive to their operating environment such as
excessive heat or the inadequacy of power supply.
The backup system is needed to backup all data and applications in the
computer. With the backup system, data can be recovered in case of an
emergency.

51

1.0


THEFT VS. HUMAN ASPECTS
Computer theft can be of two kinds:
can be used to steal money, goods,
information and computer resources
the actual stealing of computers, especially
notebooks and PDAs
Measures that can be taken to

prevent theft:

prevent access by using locks, smart-card or password
prevent portability by restricting the hardware from being moved
detect and guard all exits and record any hardware transported

BE SUPSPICIOUS OF ALL RESULTS
There are many instances where non-programmers
develop applications which are not built with proper
understanding of software engineering practices.
Data produced by such applications may not be
correct and may risk corrupting data received from
other sources that are not compatible with the
application.

LESSON 20
SECURITY PROCEDURES
Computers should have alarm systems to guard them from any attacks such
as viruses and data corruption. The alarm system is the security measures
that we take to ensure its safety.

DATA PROTECTION
We need to protect the data in the computer as it
may somehow get lost or corrupted due to some
viruses or mishap like fire, flood, lightning, machine
failures and even human errors.
There are a few ways to protect the information namely:
• make backup files
• detect the virus and clean the computer
• warn others on virus attacks

1) BACKUP FILES
Users can do backups of file systems by:
keeping the duplicated files in external storage
such as in the floppy disk and thumb drive
do backup frequently
52

1.0


2) DETECT VIRUS AND DO CLEANUP
A computer virus is able to affect and infect the way
the computer works. Viruses can be detected when
we run an antivirus program.We can also delete the
infected files and documents.

3) WARN OTHERS ON VIRUS
ATTACK
We can warn others on virus attacks or new viruses
by sending e-mails to them.

DETECTING ILLEGAL ACCESS TO SYSTEMS
The computer system is able to detect any illegal access to the system by a
user who does not have any authorisation. Basically, a corporation will
simply use tcpwrappers and tripwire to detect any illegal access to their
system. User's access will be reviewed periodically by computer operations.
On going internal audits will be made to ensure detection of violations of
security and unauthorised modifications to software and data .

TCPWRAPPERS
Tcpwrappers stop the attempted connection
examines its configuration files
will decide whether to accept or reject the request.
Tcpwrappers will control access at the application level, rather than at the
socket level like iptables and ipchains. The system will run tcpwrappers to
log access to ftp, tftp, rch, rlogin, rexec and telnet.

TRIPWIRE
Tripwire will detect and report on any changes in the
thousands of strategic system files.
The system will run tripwire to determine if system
files have changed.

53

1.0


PREVENTING ILLEGAL ACCESS TO SYSTEMS
Have any of you ever been to an airport? Do you know the do’s and don’ts
when you are at the airport?
There are things that cannot be taken inside the airplane. It is for the
purpose of security procedures.
It is the same as computer systems. It would not allow any unauthorised
users to simply access the system.
Ways to prevent illegal access to systems:
1. Run anlpassword to make password cracking difficult.
2. Run tcpwrappers to check if the name for an ip address can be
provided by DNC
3. Use a callback system to prevent unauthorised use of stolen
passwords.

PREVENTING ILLEGAL ROOT ACCESS
To prevent any illegal root access, we should have
Sudo, so that people can perform on some machine
without getting access to the entire root if that is not
required. In addition, with Sudo we did not have to
give out the root password.
Sudo stands for (Superuser do) and is a program in Unix, Linux and similar
operating systems such as Mac OS X that allows users to run programs in
the form of another user (normally in the form of the system's superuser).
Sudo allows a permitted user to execute a command as the superuser or
another user, as specified in the sudoers file.

PATCH
Patch supplies small updates to software, provided
that the source code is available.
Patch is a name of an UNIX utility. It applies a script
generated by the different program to a set of files
that allows changes from one file to be directly
applied to another file.
Resources are not enough to patch all security holes that we hear about
through the bugtraq list.
(Bugtraq is a full disclosure mailing list dedicated to the issues of computer
security. On-topic discussions are new discussions about vulnerabilities,
methods of exploitation and how to fix them. It is a high volume
mailing list and almost all new vulnerabilities are discussed there.)
54

1.0


LESSON 21
COMPUTER APPLICATIONS IN THE SOCIETY
The computer has change the society today as much as industrial revolution
changed society in 18th and 19th century. People interacts directly with
computer in education, finance, government, health care, science,
publishing, tourism, and industry.
Computers help them to do their work faster and more efficient by using the
software application that consist of special program for specific task.

SOFTWARE APPLICATIONS
Software applications are used for many reasons. Such as to enhance the
learning process, to help in business activities, to assist the graphics and
multimedia project and to fasilitate communication.
Area
Home and
Education

Examples of software applications
Integrated software, Personal finance, Legal, Tax
Preparation,
Clip Art/Image Gallery, Home Design/Landscaping and
Reference
Business
Word Processing, Spreadsheet, Database, Presentation
Graphics, Personal Information Manager, Software Suite,
Project Management and Accounting
Graphics
Computer-aided design (CAD), Desktop Publishing,
and Multimedia Paint/Image Editing, Video and Audio Editing, Multimedia
Authoring and Web Page Authoring
Communication E-mail, Web Browsers, Chat Rooms, Newsgroups, Instant
Messaging, Groupware and Video Conferencing
These software application comes in packages.
55

1.0


SOFTWARE APPLICATIONS PACKAGES
Software Application
Word Processing
Spreadsheet
Database
Presentation Graphics
Personal Information
Manager
Software Suite
Project Management
Accounting

Examples of Popular Packages
Microsoft Word and Lotus Word Pro
Microsoft Excel and Lotus 1-2-3
Microsoft Access and Microsoft Visual FoxPro
Microsoft Power Point and Lotus Freelance
Graphics
Microsoft Outlook and Palm Desktop
Microsoft Office and Lotus SmartSuite
Microsoft Project and Corel CATALYST
MYOB and Peachtree Complete Accounting

HOME AND EDUCATION
Today, computers are used in schools, colleges and
universities in order to promote better education by
using computers. In the labs, students use software
packages to complete their assignments. At the
same time, some educators use the computer-based
training and web-based training as replacements for
lecture presentation.
Some of the software applications that are usually used in schools and
universities include Microsoft Office, Adobe Photoshop, Macromedia Flash,
AutoCAD, Macromedia Dreamweaver and Macromedia Director.

COMPUTERS FOR HIGHER EDUCATION
Open Distance Learning (ODL) or online learning can
be implemented as computers are the main medium in
delivering the knowledge from one location to the
other locations.
This type of learning consists of online forum,
discussion, quizzes, test questions and many more.
The example of the Open Distance Learning institution is the Open
University of Malaysia (www.oum.edu.my).

BUSINESS
People use finance or accounting software to balance check books, pay bills,
track personal income and expenses, manage investments and evaluate
their financial plans.
Accounting software helps companies to record and report their financial
transactions. Examples of these software applications include MYOB, Intuit
Quick Books and Peachtree Complete Accounting.
56

1.0


COMPUTERS IN BANKING
In the banking sector, many financial institutions offer
online banking. People can access their financial
records from anywhere in the world. One example of
online banking is Maybank2u. (www.maybank2u.com)
Most of the packages on banking offer a variety of
online services. Which requires access to the web.
For example we can track our investment online, compare insurance rates
and do online banking.

INDUSTRY
By using the CAM system, computers record actual
labour, material, machine and computer time used to
manufacture a particular product.
Computers process this data and automatically update
inventory, production, payroll and accounting records
on the company’s network.
Examples of companies using this system are Proton(www.proton.com.my)
and Perodua (www.perodua.com.my).

GRAPHICS AND MULTIMEDIA
Computers are crucial in publishing especially in the
process of making works available to the public.
These works include magazines, books, newspapers,
music and film production.
Special software applications are used to assist graphic designers to develop
graphics, texts, photographs and composing songs.
Computer-Aided Design, Desktop Publishing, Paint/Image Editing, Video and
Audio Editing and Multimedia Authoring are among the popular applications
software.

COMMUNICATION
A government provides society with direction by
making and administering policies. Most government
offices or agencies have websites in order to provide
citizens with up-to-date or latest information.
Examples of software applications used for
communication include e-mail, web browsers,
newsgroups, instant messaging and video conferencing.

57

1.0


People can access government websites to:
check information on taxes (www.hasil.org.my)
apply for permits and licenses (www.jpj.gov.my)
check for MyKad (www.jpn.gov.my)
pay parking tickets and check summons (www.jpj.gov.my)
renew vehicle registration (www.jpj.gov.my)
register online for IPTA/IPTS application (www.moe.gov.my)

COMPUTERS IN TOURISM
Today, people will go online to get all related
information about traveling. They can visit websites to
get information on destinations, prices, hotels, flights
and car rentals.
They can also purchase ticket online, all payments can
be made by using credit card.

COMPUTERS IN THE HEALTHCARE
In the medical field, computers are very important in
running the operations. Medical staffs use computers
for various purposes, namely:
•
•
•
•

maintaining patient records
monitoring patients’ vital sign
assisting doctors, nurses and technicians with medical tests by using
computer and computerised devices .
using medical software to help with researching and diagnosing health
conditions.

Furthermore, computers and the internet are important sources for people
to get all information on medical, nutrition, fitness and other tips from
several available websites. The latest development in the medical field is
telemedicine. This technology is meant to help professional to conduct live
conference in separate locations around the globe.

SCIENCE
In the scientific world, computers are used in all
fields of science from biology to astronomy to
meteorology and others. These are things that
can be done by computers, namely:
collecting, analyzing and modelling data
serving as medium of communication with colleagues around the world
contributing to new inventions or breakthrough in surgery, medicine
and treatment
imitating functions of the central nervous system, retina of the eye
and others by tiny computers
allowing a deaf person to listen through cochlear implant
58

1.0


LESSON 22
COMPUTER USERS
People around the world rely on computers to do so many things. They are
from different backgrounds and are divided in 5 categories.

HOME USER
The computer is a basic necessity. Each home user
spends time on the computer for different reasons:
business
communication
entertainment
education

SMALL OFFICE/HOME OFFICE (SOHO) USER
SOHO users use computer to manage their work effectively. They advertise
their products and services through
websites. They also take orders from the
websites.
To save cost, SOHO connects one printer
to many employees to share. SOHO also
have their own basic business software
such as word processing and spreadsheet software to assist them in
documents preparation and their financial tasks.
Small Office or Home Office users include:
accounting firms, travel agencies, florists and many more
These SOHO users:
use desktop or notebook computers as well as telephone, handphones
and PDAs in completing their tasks and communicating
work in a small company or work as an individual at home
59

1.0


MOBILE USER
Network services are expanding to serve people
across the country and the world. More users are
becoming mobile users, who work on computer while
they are away from their home or main offices.
Mobile users:
include real estate agents, insurance agents, meter readers and
journalists
use notebook computers, Internet-enabled PDAs or smart phones
work with basic business software such as word processing and
spreadsheet business software
use presentation graphics software to create and deliver presentations
to a large
audience by connecting a mobile computer or device to a video
projector

POWER USER
Power users require the capabilities of workstation
computers or other types powerful computers. The
software that is used by power users is normally
expensive because of their specialize design. Their
computer have network access connections and
internet connections.
Power users:
include engineers, scientists, architects and virtual reality animators
use computers with extremely fast processor, bigger storage and
customised software
work with mini computers that uses design to meet the organisational
needs
use software such as CAD, CAM and MATLABExamples :

LARGE BUSINESS USER
Each employee or customer who uses computer in
large offices of company is a large business user.
Large business users use a large network of
computers. Use computers for basic business activities
such as preparing bills for millions of customers,
preparing payroll and managing thousands of items in
the inventory.

60

1.0


Large business users:
bank, insurance company, hypermarket
use computers for basic business activities
have e-commerce that allow customers and vendors to interact and do
business transactions online therefore customers, vendors and other
interested parties can access information on the web
have e-mail and web browsers to enable communications among
employees, vendors and customers
provide kiosks in public locations
Many employees of large business telecommute, which means they work
away from their offices workstation. They also have flexible schedule.

61

1.0


CURRENT AND
FUTURE DEVELOPMENT
LESSON 23
HOW TO CONDUCT A STUDY
There are five basic steps to follow when we do a study.
1. Get an overview of your topic.
2. Narrow down the topic and form some specific
questions related to it.
3. Find study materials related to the topic.
4. Evaluate study materials
5. Write out study papers and cite sources
Examples of the terms usually used in a study.
compare: to examine similarities or differences
define: to provide clear and concise meaning
discuss: to examine in detail and present arguments for and
against
explain: to tell how things work or come to be the way they are
STEP 1 - GET AN OVERVIEW OF THE TOPIC
Familiarity
We need to familiarise ourselves with the topic before we
start doing a study. This will allow us to spend more time
developing a topic rather than using more time learning
about the topic.
We also have to get a broader picture of the subject by
focusing on the who, when, why, how and where questions.
Reference
Refer to a dictionary, encyclopedia, handbook, textbook, guide or
bibliography which can provide an overview of the topic.
Brainstorming
Spend some time brainstorming about the topic and write down everything
that we can think of about the topic.

62

1.0


STEP 2 - NARROW DOWN THE TOPIC
Narrow down the topic by reading the sources and
form some specific questions related to the topic. By
doing this, we may have awareness of the various
aspects that we may want to study. However we need
to understand that not all information is reliable and
we have to differentiate between facts and opinions.
Objective Information
based on facts which can be verified
presents results of original study
often the view from experts in the subject area
presents analysis of facts from all sides of issue
Subjective Information
based on what seems to be true
reflects personal views or judgment
often the views of individuals or groups
may present an analysis of the facts from one side of an issue
STEP 3 - FIND STUDY MATERIALS
Study materials are available offline and online. We
can search for the information that we want in books,
journals, articles or other resource materials found in
the library and the Internet.
A list of all the books, journals and electronic
materials are available from the library. We can use
the online databases to find the most useful materials for our study.
STEP 4 - EVALUATE STUDY MATERIALS
All selected materials need to be evaluated in four aspects:
Aspects
Relevance

Sample
Does this publication help to answer the research
question?
If it does not find something else which does.
Reliability/Credibility is the information accurate?
has the information been peer reviewed?
are the authors and publishers reputable?
do they cite their credentials?
are there footnotes and a bibliography?
Perspective
is this a primary source (presenting the author's own
research and ideas) or a secondary source
(summarising and discussing the research and ideas
of others)?
is the evident biased? Does the author attempt to
sway the reader's opinion?
63

1.0


Update

how recent is the information published?
how recent has it been updated?
have there been new developments on the topic?
could the information you are using be misleading
because of the publication date?

STEP 5 - WRITING OUT THE STUDY PAPER
When all resources are gathered, start writing the paper and cite all the
sources of information used. These may include books, journals, articles and
magazines.

LESSON 24
PRESENTING RESULT
A presentation should contain three well-defined sections, they are:
1. Introduction
is at the beginning of the research
includes the objectives of the research
provides a clear statement on why the study was undertaken
includes the limitations/assumptions and analytical techniques
2. Content
consists of facts or arguments related to subject matter
can be presented in an argument format or just as an overview
3. Conclusion
is a review of content (not repetition of content)
relates to the statement of objectives in the introduction
should not introduce new issues
should contain judgment or decision that has been reached

BASIC NEEDS OF A GOOD STUDY PAPER
There are a variety of ways to write out your research. However, there is a
set of basic requirements that must be followed when it comes to submitting
or presenting written presentation.
1. General Points
number all pages
use one side of A4 paper
secure all pages with a staple (top left-hand corner)
don’t use paper clips/pins or folders
must be typed/word processed
clear and easy to read print-out
spell check your paper
supply an estimated word count on the cover sheet
include your name, course name and teacher’s name
64

1.0

2. Style
double-spaced
12 point minimum and 14 point maximum (with the exception of
headings and footnotes)
2 spaces after a full stop and 1 space following a comma, semicolon or colon
no abbreviation such as ‘e.g.’, ‘&’ or ‘etc.’ unless it is included in
a bracket. Write everything in full: ‘for example’, ‘that is’, ‘and
so on’.
numerals are used when the number is more than two words;
for tabulation; statistical discussion; sums of money; addresses;
dates; time; and page, chapter, volume numbers (for example,
2 June, 2000)
consistency in style for example in writing out headings
3. Quote
a direct quote must be placed in quotation
block quotes are used if a direct quote is more than three lines
long.
if possible, paraphrase information in preference to using direct
quotes.
use quotes and paraphrasing to support argument
4. Clarity
helps your readers understand your paper by organizing your
paper well and don’t forget to insert the page numbers
edit your work means reading through the paper several times
before submission and don’t just rely on the rough spelling and
grammar checks offered by your software.
5. Indicating your intentions
in a complex study, the introduction of every section should
inform the reader what to expect in that section should contain
judgment or decision that has been reached.
the final paragraph in each section should tie the contents of
that section together with a short conclusion.
do not use too many words to say what you are going to do and
what you have done, keep to the necessary minimum

65

1.0


PREPARING A PRESENTATION

LESSON 25
DELEGATION OF WORK

WHAT IS DELEGATION?
Delegation is the ability to assign tasks to others
with the authority, responsibility and accountability
to finish the tasks. This means it is not enough to
just give out orders to people but as a team leader
you also need to give specific instructions on what to
do. Tell your team members that they are
responsible for the task given to them and explain to
them what would happen to the project if they failed
to finish the task.

WHY DELEGATE TASKS?
Reasons why should I delegate tasks:
will be able to save time
help others to learn new skills, for example, how to negotiate and
cooperate
utilise individual's additional strengths and expertise
will be able to achieve large goals by dividing them into smaller tasks
promotes creativity and diversity because others may have better way
doing things
cut down on tasks that can be done just as well by others

66

1.0


WHAT TO DELEGATE?
In order to complete a team project, you will be asked to use your skills in
research, presentation and task delegation. When working on a large project
you must know what task to delegate and how to assign them.

1. Questioning
Discover a problem
Form a question to answer the problem
2. Planning
Set out steps to find answers
Select sources for possible answers
Plan a basic draft for reporting
Assign tasks to team members
Agree on contingency plans
3. Gathering
Go to agreed sources of information
Collect information
4. Sorting
Put similar information together
Highlight valuable credible information
5. Synthesizing
Discuss information with others
Combine different information
6. Evaluating
Discusses if the information gathered supports the answer
Test out solution and decision that supports the answer
7. Reporting
Write or type out the report
Create an appropriate graphic or media
Prepare for Q & A
Prepare research

67

1.0


EXAMPLES OF TASK DELEGATION
Scenarios
“The head librarian wants us to finish the
work by the end of the day, which is about 5
pm.”
“We have to sort out these books according
to their subjects. Remember to stick the
correct book codes onto the books.”
“I will teach you the coding system.”
“Chong, you take the science books and
Indra, you take the art books.”
“I don’t know the coding system.”
“So, is everybody clear on what needs to
be done and when we should meet again
later.”

Good Techniques
Set clear task deadline.
Describe in detail the task
objective.
Help team member to
perform task if needed.
Delegate task to those
qualified to do the job.
Inform limitation of abilities
or resource to other team
members.
Monitor task progress.

LESSON 26
TOPICS FOR STUDY
In order to do the research, you need to follow this 5 steps.

68

1.0


STUDY TOPICS
Form into groups. Discuss with the team members and choose ONE (1) of
the study topics below:
1. Copyright and piracy from a moral and legal standpoint.
2. Credit card fraud on the Internet and its implications on the industry/
economy/government.
3. Malaysian Cyber Law, Electronic Government Law.
The portfolio will contain:
1. Team journal
study project introduction page
minutes of team meetings
initial project plan/calendar
conflict resolution report
2. Initial framework for presentation
3. Final presentation
The purpose of team journal is to keep track the progress of the project.
The team’s initial framework is where the team should do some basic study
on the topic and decide what should be included in the presentation.
The print out of the final presentation will be given to the teacher for final
grading.

SOURCE CITATION CARD

Source citation card is a note card in which you write the name of the
article, author, book name, page numbers, where you found it, why it is
good information and a short summary of the important points.

69

1.0


CREATING YOUR PRESENTATION
A presentation should:
have at least 15 slides (not including the Title slide)
have a Title slide
- introduce presentation
- include names of each member of the team
use any design templates
use at least 5 graphics (e.g.: clip art, photographs, word art and
drawings)
have some multimedia
- use animation on slides (be careful of very noisy ones!)
- use slide transitions
use less text on the slides
- try presenting the information through pictures, graphs, mind
maps or any other form of visual (as oppose to textual)
presentation
have a citation slide
- the last slide must list all of your citations and other related
resources (where you got the content)
- remember to give credit to others!

THE FINAL PRESENTATION
Guidelines:
each team member must speak during the presentation.
each team will have 10 minutes to present.
presenters should face the audience and not just read from the screen
or paper.
Tips:
practice in advance.
prepare notes on paper or cue cards to help you remember what you
need to say during the presentation.
remember to speak out clearly for people at the back to hear you.
do not shout!

70

LA1 Introduction To Information & Communication Technology

More Related Content

What's hot (20)

Similar to LA1 Introduction To Information & Communication Technology (20)

Recently uploaded (20)

LA1 Introduction To Information & Communication Technology