funsec mailing list archives

Re: striptease captcha malware


From: David M Chess <chess () us ibm com>
Date: Fri, 8 May 2009 10:45:27 -0400

striptease captcha malware: 
http://blog.trendmicro.com/captcha-wish-your-girlfriend-was-hot-like-me/

Funny.  :)   Not new, as everyone's pointed out, but still funny!  And 
clever.  I've also heard (unverifiably) of web sites that offer access to 
dirty pictures in exchange for CAPTCHA decoding; similar concept.

This line from the weblog entry is questionably:

However, the ?answers? are then sent to a remote server, where a 
malicious user eagerly awaits them.

It's presumably an automated account-creation program, not a human user 
(as this sentence says, and the picture at the top shows) who is awaiting 
the results.  If it was "a malicious user" sitting in front of a keyboard, 
he could decode the CAPTCHA himself.

The general concept is pretty brilliant: if a problem is too hard for an 
automated program to solve, outsource it to humans!  :)

DC
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