On 4chan, the world's largest image board with the highest number of hits in the English-speaking world, users must pass a CAPTCHA to prove they are human before posting a message. Full-stack software ...
CAPTCHA was developed by AltaVista in 1997 to eliminate bots trying to add spam URLs to search engines. It is said that introduction of CAPTCHA was able to prevent more than 90% of URL addition by bot ...
It’s not as if it hasn’t been done before, but researchers at Stanford quantified ways to crack the CAPTCHA test many web sites use to make users prove they’re human, and recommended ways to make sure ...
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