Re:Captchas are Becoming Ridiculous
by ademarre on Wednesday June 25, 2014 @03:31PM
(#7946261)
If enough people colluded to use the same unknown word, say "foobar", then couldn't they train recaptcha to believe that is the true value of the word? If I understand recaptcha correctly, and assuming they don't detect collusion well, then eventually the known word pool would get poisoned with a surplus of foobars.
[ Parent
| on HN ]
Some 4channers tried that already. You can guess which 6-letter epithet for black people they tried to use.
Ladies and gentlemen, I give you: "the internet".
>You can guess which 6-letter epithet for black people they tried to use.
'Blacks'
Hint: It starts with "N" and ends in "igger"
Naggers!
did it have any letters in between?
An engineer said they have defenses against this
>Checking for offensive words is only one of the filters we have. Even without that filter, it’s essentially impossible to get recaptcha to return a false result.
http://musicmachinery.com/2009/04/27/moot-wins-time-inc-lose...
> it’s essentially impossible to get recaptcha to return a false result.
Famous last words :P
This has happened in google image labeler. Now offline, it was a game where two random people were matched and needed to find new tags for the same image - the scoring was cooperative so points were given when you both chose the same word in the same game. /b/ of course quickly organised the jesusporn metagame... Label the first image as jesus, second as porn, third with jesus, etc. This resulted highest scores for some time.