Basic HTML version of Foils prepared May 19 99

Foil 34 Web Spoofing

From Computer Crimes: Examples of Network Security attacks Tango Group Internal Technology Seminars -- April 23 99. by Roman Markowski


URL rewriting
The attacker creates false "copy" of a the entire Web
  • attacker takes selected pages, the rest is available on-line
  • attacker web server is between a victim and the rest of the Web (DNS poisoning, registering false URL in a search engine)
  • if you see http://www.bad.com/http://www.good.com you are under attack; works even with secure connection
  • You can ask for it: http://www.anonymizer.com/
  • he can intercept and modify data
  • capture passwords, credit card information, etc
Defense
  • disable JavaScript (prevents attacker from hiding URLs)
  • Display URL and look at it



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