Computer Hacking - An Introduction
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Hacking involves modifying systems outside of their intended purpose. It is commonly done by teenagers and young adults using computers. Reasons for hacking include profit, protest, and challenge. Hacking can damage information, enable theft, compromise systems, and cost businesses millions per year. Hackers can be black hats who intend harm, white hats who perform security work, or gray hats who do both. Common attack types include DoS, password guessing, and man-in-the-middle. Hacking tools are widely available online, and passwords can be cracked using dictionary, brute force, and other attacks.
Computer Hacking - An Introduction
- 1. HACKING An introduction by Jayaseelan Vejayon
- 2. So…what is hacking? • Hacking is the practice of modifying the features of a system, in order to accomplish a goal outside of the creator's original purpose. (http://whatishacking.org/) • Computer hacking – is the practice of modifying computer hardware and software to accomplish a goal outside of the creator’s original purpose. – is most common among teenagers and young adults (http://www.wisegeek.org/what-is-computer-hacking.htm)
- 3. Why hack? • Profit – Information can be sold – Information can be used to steal • Protest – Eg. Hactivism: a hacktivist is someone whom utilizes technology to announce a social, ideological, religious, or political message • Challenge – Fun, problem-solving skill, the thrill of power
- 4. Why hack? Some examples… • Hackers want to – use the victim’s computer to store illicit materials i.e pirated software, pornography, etc. – steal the victim’s personal information in order to access accounts or the accounts of the website visitors. The data can be used to gain access to important databases; billing, merchant accounts, etc.
- 5. Why hack? Some examples… • Hackers want to – set-up fake ecommerce sites to access credit card details; gain entry to servers that contain credit card details and other forms of credit card fraud – spy on friends, family, co-workers for personal reasons – revenge (http://www.website-guardian.com/why-do-hackers-hack-websites-va-5.html)
- 6. Effects of hacking • Damage to information • Theft of information – Credit card details, social security numbers, identity fraud, email addresses • Compromise/damage of systems • Use of victim machines as “zombies” Hacking attacks cost large businesses an average of about $2.2 million per year (Symantec 2010 State of Enterprise Security Study)
- 7. Effects of hacking • Businesses may suffer from damaged reputations and lawsuits • Business secrets could be stolen and sold to competitors • Computing system/infrastructure could suffer from performance degrading as the resources used for malicious activities In an education institution, hacking can cause damage to the institution’s credibility/reputation ie. If examination system is compromised and sensitive data tampered
- 8. A hacker… Can fall into one of these types: • Black hats Individuals with good computing knowledge, abilities and expertise but with the intentions and conducts to cause damage on the systems they attack Also known as crackers • White hats Individuals with good hacking skills They perform defensive activities against hacking Also known as security analysts
- 9. A hacker… • Gray hats Individuals that perform both offensive and defensive hacking activities • Suicide hackers Individuals whom want to fail a computing system for a personal ‘reason’ or ‘cause’ Not worried about the serious consequences that they may have to face as a result of their damaging activities i.e being jailed for many years
- 10. Types of attacks … • DoS/DDoS Attacks • Password Guessing Attacks • Man-in-the-Middle Attacks • Identity Spoofing • Interception • Eavesdropping • Backdoor Attacks … and many more!
- 11. How to hack?… Many of the hacking tools and guides are available on the Internet BackTrack is a Linux distro with many tools; Metasploit, Aircrack-ng, Nmap, Ophcrack, Wireshark, Hydra and many many more! The real reasons for BackTrack development are for digital forensics and penetration testing
- 12. How to hack?…some examples System Hacking; Keyloggers, password cracking Trojans Viruses Sniffers Social Engineering Denial of Service SQL Injection
- 13. How to hack?…some examples Password cracking - dictionary attacks, brute forcing attacks, hybrid attacks, syllable attacks and rule-based attacks Other types of password cracking attacks – shoulder surfing, social engineering, dumpster diving, wire sniffing, Man-in-the- Middle, password guessing, keylogger
- 14. Passwords… Enforce complexity so that passwords are difficult to break; use combination of letters, numbers, special characters
- 15. How to hack?…some examples Password cracking - dictionary attacks, brute forcing attacks, hybrid attacks, syllable attacks and rule-based attacks Other types of attacks – shoulder surfing, social engineering, dumpster diving, wire sniffing, Man-in-the-Middle, password guessing, keylogger
- 16. How to hack? LIVE DEMO Keylogger Sniffing Web-cloning Google Hacking NTFS Streams DNS Spoofing
Editor's Notes
- #3: There are also other types of hacking that I came across; brain hacking, biohackingSince the word “hack” has long been used to describe someone who is incompetent at his/her profession, some hackers claim this term is offensive and fails to give appropriate recognition to their skills.Many hackers are true technology buffs who enjoy learning more about how computers work and consider computer hacking an “art” form. After this, the term hacking in this presentation is relevant to computer hacking only