Decaptcha program cracks text-based captcha

CAPTCHAs they were considered has the programs that separate the humans from machines . And now three Stanford researchers have found a way to crack these captcha's which is called Decaptcha, a program that uses image processing, anti-segmentation and a spell-checker to defeat text-based CAPTCHAs. Elie Bursztien, Matthieu Martin and John Mitchell pitted Decaptcha against a number of sites: it passed 66% of the challenges on Visa's Authorize.net and 70% at Blizzard Entertainment. At the high end, the program beat 93% of MegaUpload's tests; at other end, it only bested 2% of those from Skyrock. Of the 15 sites tried, only two completely repelled Decaptcha's onslaught -- Google and reCaptcha. 

So ,  for securing your site login's using captcha's you need to use randomized words or its better to follow alphanumeric capthca's rather than text-based captcha

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