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Spammers and anti-spam softwareThis forum post has messages dated from 02/03/07 through 07/23/09, please be sure to read all the messages. If you feel it is old or outdated, please follow up with a question or comment and someone may be able to update it, or reply with newer information if you have it. Spam - Spam
| Spammers and anti-spam software Has anti-spam software changed the techniques of spammers at all? Surely their success rate at getting people to fall for spam has drastically dropped with the amount of anti-spam software that is routinely used by so many people today. |
| Their techniques have evolved, sure. They are now using more of an automated approach such as bots on forums and have even managed to bypass some CAPTCHA image verification techniques which is incredible. Believe me, they are getting more advanced by the day. Many of those misspellings you see in e-mails are not due to poor English, but rather techniques to evade being detected. |
| Talking about CAPTCHA image verification techniques, is it easy to incorporate them into my forum? I am using phpBB software and would like to somehow stop the tremendous amount of spam that floods in through the built in contact form. If I could require a registration using CAPTCHA before people could submit on the forms it would help tremendously. |
| Surely by now the hackers must have developed a technique to circumvent image verification techniques? At the end of the day, any data displayed on your computer is reduced to the same digital output, and surely this can be analyzed by clever software? |
| I actually prefer sites that do use CAPTCHA techniques as it assures one of a sense of security behind the site, and is almost a guarantee that one won't be spammed after registering on such a site. Of course spammers could use reverse psychology to sucker one in, but I don't believe any site going to these lengths to protect themselves from spammers, could themselves be spammers! |
| I see CAPTCHA as a method of punishing legitimate users in an attempt to control the "bad guys". This forum seems to have very little spam messages without CAPTCHA and I understand their anti spam system stops spam across some 40 forums with under 15 minutes a day of human intervention. Just because the CAPTCHA image is twisted doesn't mean it isn't easily defeated by automated means. |
| You're quite right. It's even worse when they twist and distort it so badly that you can't make out the characters. I've been on sites where I've had to refresh the page so many times I feel like not registering anymore. |
| What is CAPTCHA? A CAPTCHA or Captcha is a type of challenge-response test used in computing to ensure that the response is not generated by a computer. The process usually involves one computer (a server) asking a user to complete a simple test which the computer is able to generate and grade. Because other computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human. Thus, it is sometimes described as a reverse Turing test, because it is administered by a machine and targeted to a human, in contrast to the standard Turing test that is typically administered by a human and targeted to a machine. A common type of CAPTCHA requires that the user type letters or digits from a distorted image that appears on the screen. |
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