[WEB SECURITY] Fake Captcha Protection

The Burmese Hacker hacker.ak at gmail.com
Tue Apr 29 07:29:07 EDT 2008

Hello all

A lot of web sites are using Fake Captcha Protection which can be
defeated by "Replay" Attack.
Recently, I found this hole in Ning.com, a growing social network site.

How many bad guys have defeated those?

Some captcha creation tutorials are also vulnerable to 'Replay' attack.
Newbie developers are mis-using them in their applications.

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