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Is this really some master algorithm that can crack all kinds of CAPTCHAs? CAPTCHA is pretty much an umbrella term for a variety of anti-spam protection and hu
by vezzy-fnord 13y ago
Is this really some master algorithm that can crack all kinds of CAPTCHAs?
CAPTCHA is pretty much an umbrella term for a variety of anti-spam protection and human verification procedures, many of them having nothing in common beyond the name.
Thus "cracking CAPTCHA" is meaningless unless you specify what type(s).
You'd need textual analysis, sentiment analysis, expression evaluation, OCR, full-scale image recognition, puzzle solving and a variety of other techniques to scratch most implementations. So it can't be one algorithm. It'd have to be many.
Then in most cases it'd probably be simpler to figure out some client-side exploit in the way CAPTCHAs handle and send data. Find a weak link, much like DC949 did with reCAPTCHA.