... and it also means that OCR based spam filtering is succesful enough for the spammers to adopt CAPTCHA-style text-obfuscation-in-images as an evasion method.
Andrew. -----Original Message----- From: Message Sniffer Community [mailto:[EMAIL PROTECTED] On Behalf Of Pete McNeil Sent: Wednesday, June 11, 2008 8:18 AM To: Message Sniffer Community Subject: [sniffer] Re: Spam no using CAPTCHA! Hello Daniel, Wednesday, June 11, 2008, 9:19:47 AM, you wrote: > Hi Everyone, > I just sent a spam sample to Message Sniffer, that was using CAPTCHA, it > said CIALIS in the CAPTCHA. I'm curios to see what Pete thinks of this new > tactic? On first look it is simply another way to use an obfuscated image to deliver their message and should be handled the same way. Use of CAPTCHA software to create this obfuscated image is an interesting choice -- it means people making good OCR resistant CAPTCHA generators are now unintentionally helping the blackhats defeat OCR based spam filtering. _M -- Pete McNeil Chief Scientist, Arm Research Labs, LLC. ############################################################# This message is sent to you because you are subscribed to the mailing list <[email protected]>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]> ############################################################# This message is sent to you because you are subscribed to the mailing list <[email protected]>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]>
