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Computer and Information Security

Computer and Information Security. Protecting yourself and your clients in the wild and wooly online world. To protect your computer and information assets…. …buy a Mac!. The End. Mac Hacked Via Safari Browser in Pwn-2-Own Contest.

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Computer and Information Security

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  1. Computer and Information Security Protecting yourself and your clients in the wild and wooly online world

  2. To protect your computer and information assets…

  3. …buy a Mac!

  4. The End

  5. Mac Hacked Via Safari Browser in Pwn-2-Own Contest • A zero-day vulnerability … Macaulay pwned the Mac by sending it an e-mail that directed a user to a malicious site. Upon visiting the site, the user … was infected with malware, without clicking on anything within the site. -- eWeek Security Watch

  6. Vectors for getting “pwned” • Physical access • Theft • Seizure • Attack of opportunity • Network access • Browsing the Web • Using email • Using a wireless connection • …

  7. Physical protection • Leave sensitive information at home • Separate data from hardware • Use encryption • Use strong passwords • Eliminate sensitive information • Log out when not using

  8. Cracking passwords • Single word found in dictionary: ~ 1 s • Example: “translator” • 7 random lowercase letters: ~ 45 m • Example: “uklahva” • 10 random characters: ~ 632,860 years! • Example: “4pRte!ai@3” • (With Moore’s Law: 30 years) Source: Wikipedia (Password strength)

  9. Network vulnerabilities

  10. Internet & email • Cross-site scripting (XSS) • Phishing (social engineering) • Viruses • …

  11. On a network: batten the hatches • Filter • Block • Ignore

  12. Internet

  13. Firefox • Safer • Cross-platform • Free/Libre • Add-ins • All the cool kids are using it!

  14. Vital Firefox Add-ins • Web of Trust • NoScript

  15. Web of Trust • Warns users about risky websites that try to scam visitors, deliver malware, or send spam.

  16. ginstrom…

  17. warez…

  18. NoScript • Allows JavaScript, Java, Flash and other plugins to be executed only by trusted web sites of your choice.

  19. Scripts from 15 sites!

  20. Safer Email • View email as plain text • Beware of phishing • Spam filtering

  21. Example: MS Outlook

  22. SpamBayes • http://spamassassin.apache.org/ • http://spambayes.sourceforge.net/ SpamAssassin

  23. Stay Safe! • http://ginstrom.com/ijet-19/

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