Submission + - Stop Spam Bots with the HTML Encoded Captcha (HEC)
rangeva writes: "If you own a site where users can participate in a discussion or share their opinions (forums, talkbacks etc) you probably had to deal with spam bots. Even with a standard Captcha many scripts are able to crack it and post a spam message on your site.
In an attempt to prevent this annoyance I created a new kind of Captcha that presents an unsolved challenge to the bot's programmers. What I did was to encode the Captcha image into HTML. By doing so I gave the bots programmers a few new challenges:
In an attempt to prevent this annoyance I created a new kind of Captcha that presents an unsolved challenge to the bot's programmers. What I did was to encode the Captcha image into HTML. By doing so I gave the bots programmers a few new challenges:
- The Captcha is no longer an image and therefore not a resource they can download and process.
- The owner of the site can change the properties of the Captcha's HTML, making it unique, and by doing so add another layer of complication for the bot to crack.
