tag:blogger.com,1999:blog-5430866.post4909209376397398030..comments2024-01-02T08:54:14.406-05:00Comments on Peter Bromberg's UnBlog: Un-Captcha Techniques Reduxpeterbromberghttp://www.blogger.com/profile/18173639411723574123noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-5430866.post-41223002194448992852009-01-19T05:35:00.000-05:002009-01-19T05:35:00.000-05:00Peter, sorry don't know where to post this: I have...Peter, sorry don't know where to post this: I have some problems with your captcha control, the validatecaptha routine validates the captcha guid against the cache, but if the cache has expired you get a null reference exception. Could you please have a look at that?<BR/><BR/>/Peter Strömblad<BR/>in relation to Your captcha control from eggheadcafeAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5430866.post-10420640439340326202007-10-22T10:54:00.000-05:002007-10-22T10:54:00.000-05:00i tried this after i read about a honeypot captcha...i tried this after i read about a <A HREF="http://haacked.com/archive/2007/09/11/honeypot-captcha.aspx" REL="nofollow">honeypot captcha</A> here when i was experiencing spam on one of my sites, but unfortunately it did not work. sometimes the bots didnt put a value in that box, sometimes they did.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5430866.post-79767135797115541172007-10-22T08:51:00.000-05:002007-10-22T08:51:00.000-05:00I'd be willing to help raise funds to cover the co...I'd be willing to help raise funds to cover the cost of lethal injection for any individual pompous enough to write a spam bot.<BR/><BR/>God, please curse them!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5430866.post-70657446867834578272007-10-20T20:39:00.000-05:002007-10-20T20:39:00.000-05:00I would think another way would just be show sever...I would think another way would just be show several random images, each with a number under them (the url for the images must also be random) then ask the user to put in the order of the images, like dog, cat, frog, car, so the user would enter the numbers under each image in the order asked, would be very difficult for a bot to figure that out.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5430866.post-37798726750635253382007-10-20T06:00:00.000-05:002007-10-20T06:00:00.000-05:00I have other resolution. I'm using JS to hide spec...I have other resolution. I'm using JS to hide special form input. :)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5430866.post-46974995093580221132007-10-20T05:42:00.000-05:002007-10-20T05:42:00.000-05:00When I saw how Casey Chesnut proved he could OCR a...When I saw how Casey Chesnut proved he could OCR a Captcha image, that's when I realized there was no "perfect" solution.peterbromberghttps://www.blogger.com/profile/18173639411723574123noreply@blogger.comtag:blogger.com,1999:blog-5430866.post-15331872214551399022007-10-19T21:41:00.000-05:002007-10-19T21:41:00.000-05:00And I wonder how long it'll take before the bot pr...And I wonder how long it'll take before the bot programmers start searching the styles to see if the element is hidden and ignore it as well.<BR/><BR/>Measures, countermeasure, counter-countermeasure... ;)Anonymousnoreply@blogger.com