4 ms·
+ There are only 29 different variations, so bots can easily just try each one of them...
by angry-hacker 14y ago
+ There are only 29 different variations, so bots can easily just try each one of them...
- jerf 14y agoThey don't even have to do that; a 1/29th chance of success is plenty for the scammers. This is Yet Another Complete Crap CAPTCHA. It isn't solving the problem of prevent real spammers from sending you real spam, it's solving the problem of looking enough like a CAPTCHA to think you're getting somewhere. Or in this case, selling you something. Also, at least the spiral one I got is flat-out solvable; run "find edges", run a search for the characteristic slope relationship of the lines at various points in the images... would probably take a decent computer vision student about four hours, tops. That hardly even qualifies as trying.
- mikle 14y agoYes, I missed the obvious one :) As someone also mentioned it accepts "close enough" solutions so it basically boils down to 1/6 chance which spammer will consider almost perfect.