CEO of Bit Discovery, Professional Hacker, Black Belt in Brazilian Jiu-Jitsu, Off-Road Race Car Driver, Founder of WhiteHat Security, and Maui resident.
Tuesday, March 13, 2007
Worst CAPTCHA Ever is RIGHT!
I just came across the Worst CAPTCHA Ever post and upon seeing the title I was thinking, "cmon, how bad could it be." Then I saw it. OMG!
lol... In addition the captcha would be rather easy to OCR. Just averaging all the frames would remove all the extra animations, while leaving the good text. After that it's rather simple, it doesn't even look like the characters are distorted.
yeah, and characters are spaced out - that's totally backwards, because OCR won't have problem extracting individual ones.
Most of those CAPTCHAs are quite easy to break and they're "secure" just because spammers don't care about one or two blogs, if they have millions unprotected ones out there. (even Yahoo's hard Gimpy has been cracked well-enough for spammer's purposes - http://www.cs.sfu.ca/~mori/research/gimpy/hard/)
5 comments:
lol...
In addition the captcha would be rather easy to OCR. Just averaging all the frames would remove all the extra animations, while leaving the good text. After that it's rather simple, it doesn't even look like the characters are distorted.
yeah, and characters are spaced out - that's totally backwards, because OCR won't have problem extracting individual ones.
Most of those CAPTCHAs are quite easy to break and they're "secure" just because spammers don't care about one or two blogs, if they have millions unprotected ones out there.
(even Yahoo's hard Gimpy has been cracked well-enough for spammer's purposes - http://www.cs.sfu.ca/~mori/research/gimpy/hard/)
Actually, I think a worse captcha is:
http://www.xkcd.org/c233.html
Much funnier though.
That's pure insanity... Hm. maybe i'll use it :D
-Jungsonn
Hotlink are we?
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