Computer securety

COMPUTER SECURITY & SAFETY
ETHICS & PRIVACY
Faculty Of Bachelor Of Business Administration
Group name: Firewall
Presented By:
Samia Nizame
ID NO:14152101343
Marjana Ahmed
ID NO: 14152101341

Presentation Outline
 Computer
Security Risk
 Computer Crime
 7basic categories
of cyber crime
 Computer Viruses
 Computer Worms
 Trojan Horses
 Rootkit
 Symptoms
 Safeguards
 DoS attack
 Back Doors
 Spoofing
 Firewalls
 References

Computer Security Risks
A computer security risk is any event or action that
could cause a loss of or damage to computer
hardware, software, data, information or
processing capability
1

ComputerCrime
 An intentional breach of computer security
often involves a deliberate act that is against
the law
 Any illegal act involving a computer generally
is referred to as a computer crime
2

7basic categories of cyber crime (1/2)
 Hacker groups: Usually work anonymously and create tools
for hacking.
 Cracker: Someone who accesses a computer or network
illegally but has the intent of destroying data, information
or other malicious action
 Script Kiddie:A wannabe hacker, Someone who wants to
be a hacker but lacks any serious technical expertise
 CyberTerrorist: Someone who uses the internet or network
to destroy or damage computers for political reasons
3

7basic categories of cyber crime (2/2)
 Corporate Spies: Some corporate spies have excellent
computer & networking skills & are hired to break into
specific computer & steal its proprietary data & information
 Unethical Employees:They break into their employers’
computers for a variety of reasons
 Cyber extortionist: Someone who uses e-mail as a vehicle
for extortion
4

Computer Viruses
 Is a small program that affects or infects, a computer
negatively by altering the way the computer works
without the users knowledge
 It can damage files & system software including the
operating system
 Viruses name: Macro Virus, Boot Virus, Network Virus,
FAT Virus, Logic Bombs
5

Computer Worms
It is a program that copies itself repeatedly, for
example in memory or on a network, using up
resources & possibly shutting down the
computer or network
6

Trojan Horses
 A trojan horse named
after the Greek myth is a
program that hides
within or looks like a
legitimate program
 A trojan horse does not
replicate itself to other
computers 7

Rootkit
It is a program that
hides in computer &
allows someone
from a remote
location to take full
control of the
computer
8
Once the rootkit its installed, the
rootkit author can execute
programs, change settings,
monitor activity, and access files
on the remote computer

Safeguards against computer viruses &
other Malware (1/2)
 Never start a computer with removable media inserted in
the drives of plugged in the ports, unless the media are
uninfected
 Never open an e-mail attachment unless you are expecting
it & is from a trusted source
 Set the macro security in program so that you can enable or
disable macros
 Install an antivirus program on all of your computers
11

 Scan all downloaded programs for viruses & other malware
 If the antivirus program flags an e-mail attachment as
infected, delete or quarantine the attachment immediately
Before using any removable media, scan the media for
malware
 Install a personal firewall program
 Stay informed about new virus alerts & virus hoaxes
Safeguards against computer viruses &
other Malware (2/2)
12

References:
1. Discovering Computer Fundamentals:2014
(writter:Shelly)
2. https://en.wikipedia.org/wiki/Spoofing_attack
3. http://files- recovery.blogspot.com/2010/06/20-
common-types-of-computer-viruses-and.html
17

Computer securety

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