News tagged with captcha

Stanford researchers outsmart captcha codes

( -- Stanford researchers say that captcha security codes, asking Internet sign-up users to repeat a string of letters to prove the users are human, can be thwarted, and they have successfully defeated captcha ...

dateNov 03, 2011 in Internet report
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Moving video to 'captcha' robot hackers

We see the popular "captcha" security mechanism often ― wavy letters websites ask us to type into a box. It's used by web pages and newsletter sign-up forms to prevent computer robots from hacking into servers and databases. ...

dateDec 29, 2009 in Computer Sciences
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