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POPSWhy Google bought reCAPTCHA (you'll never guess this) I had no idea that the collective entries people made were self - validating and educating computers on what the letters were...that makes reCAPTCHA about 100x more innovative than i ever realized it to be. For anyone who doesn't know, ReCAPTCHA is the thing you have probably seen many times when you sign up for a new service - when you're asked to enter the scribbled letters in a box.
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POPS15 of the Meanest CAPTCHAs ever You've seen them all around the web, CAPTCHAs are those distorted images of letters and numbers used to prevent the automated use of websites. They are supposedely random, but sometimes they seem to be "telling you" something; others are just plain ridiculous or humanly impossible to read. Here's a collection of the strangest, most bizarre tests agains spam bots.
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POPSStrippers seduce humans in order to circumvent CAPTCHA This is a great example of a problem that is too difficult for current AI methods and depends on "real" intelligence to solve. Humans are plugged into the workflow to solve the problem just as you'd add another service to a pipeline. The innovative spirit is alive and well with spammers.
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POPS CAPTCHA Security Broken According to a blog post by a Russian security researcher the CAPTCHA system used by Yahoo! may have been compromised.
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