#1 2008-01-18 2:41 am

Russ

Guest

Yahoo's CAPTCHA broken

http://www.informationweek.com/manageme … =205900620

A 35% success rate doesn't sound like much, but it's still enough to net you a ton of accounts.

Captain Red

Member

Registered: 2008-01-04

Posts: 59

Re: Yahoo's CAPTCHA broken

That's better than one out of three... sounds plenty big enough to me.

*sighs, starts filling sandbags*

TeMerc

Member

From: Phx. AZ

Registered: 2007-12-19

Posts: 51

Website

Re: Yahoo's CAPTCHA broken

Boy, am I ever glad I banned all those free domains last year.

yannick

Member

From: Netherlands

Registered: 2008-01-12

Posts: 15

Re: Yahoo's CAPTCHA broken

best defence is basicly logic questions with a single awnser that only humans can understand. Eg:

"Red is blue, true or false?" when you fill in false the awnser is correct and your not a spambot. Basicly you make a large list of these questions and just put a random one on your registration page. Should at least stop bot's from entering.

Last edited by yannick (2008-01-19 11:33 am)

johnnaasdotcom

Member

Registered: 2007-12-22

Posts: 6

Re: Yahoo's CAPTCHA broken

I use the mod that yannick is talking about, however I will shy away from questions with an "or" statement, or questions with yes or no in them. I think it wont be long before bots crack that one with at least a 50/50 shot of getting in. I prefer questions like "how many tires does a four wheeler have?" and my latest one "what color is a redheads hair?" Not one bot has gotten through since I turned it on!

yannick

Member

From: Netherlands

Registered: 2008-01-12

Posts: 15

Re: Yahoo's CAPTCHA broken

hehe, yeah my exaple was pretty bad. I lack the proper english knowlage to come up with those questions.

I think I saw google use a system simmilar too, not sure though.