Dynamoo writes: "A few months ago there was some speculation that spammers had managed to break the security CAPTCHA for many webmail systems and were using them to spread viruses and junk email. The problem was that no-one could actually demonstrate a mechanism to defeat the security code.
However, an novel approach has been documented by the BBC, suggesting that a virtual stripper application may be partly to blame. The woman in the application progressively undresses if the user types in the correct CAPTCHA code.. a code that is actually being generated by the Yahoo! mail security check. The application itself is a trojan, dubbed TROJ_CAPTCHAR.A by Trend."