Trojan found that can break Yahoo CAPTCHA security in minutes

Researchers have discovered a malware engine that appears to be able to break the CAPTCHA security used by Yahoo’s webmail service after only a handful of attempts.

There is nothing new in malware that tries to break CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) — a low-level war has been ongoing since this type of security was first implemented almost a decade ago – but what matters is how quickly and invisibly this can de done.

Websense has posted an online video showing the effectiveness of the engine it found working as part of the Cridex banking Trojan malware in breaking down Yahoo’s CAPTCHA process¬†— via

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