Spam Filter using Captcha

July 29th, 2012


Spammers are everywhere and whether we like it or not, we just cannot control the spams we get from these spammers, or can we? The truth is that we are fortunate to have spam filters around trying to block these spammers from getting into our websites. Wee, if you did not know anything about spams and spammers and spam filters, would you still build your site?

You have to make sure you are well protected. But how? Easy and here‘s how.

Never put forms, use automated or manual filters instead, use CAPTCHAs or use CSS or JavaScript codes. I suggest not using forms simply because it is the simplest and most effective way to protect your site from spammers. However, if you need to have a contact to your readers, you would need contact info. Never put your email address on the web because this will not only give the spammers the chance to send you spam emails, you are most likely going to experience having to receive lots of emails from anyone.
Using manual filters means you are going o manually filter the spams you receive from your site. Automated is done by your computer. They will be the one to handle the “filtering” of spams you get from the blog comments. This automated filters need to be updated and setting it up does not necessarily mean you won’t get any more spams in your blog site.

The use of CAPCHA makes it impossible for any computer to read it because it uses images which are written using an unfamiliar font. This is a good way for automated spammers. Only human can read this CAPCHA. However, sometimes, using this is not a very good idea because some users find it hard to read it and makes them impatient.

JavaScripts is a great ways to trick spam bots because a lot of them cannot read JavaScripts. Same thing goes with CSS. CSS is used to keep some specific fields private. You can probably use a combination of both to protect yourself from bots.