To CAPTCHA a Predator

In the past six months we have noticed a distinct increase in website form spam — forms that are filled out with junk content in them and submitted.

What causes this problem are bots — small programs, like search engine spiders, that can read and traverse websites. Unlike Spiders, these programs have malicious intent, be it just to cause vandalism, to create links to websites, or worse still, attempt to hack an unsecure form-mail system. These predatory programs can submit hundreds of forms a minute and not only cause chaos to your inbox, but slow down your server and website at the same time.

The solution is to make the form unsubmittable by a bot, this is achieved by adding a “CAPTCHA” which stands for “Completely Automated Public Turing test to tell Computers and Humans Apart.” You have probably seen these hundreds of times and not realized what they are for. The most common type is an image CAPTCHA, which looks like this:

image CAPTCHA

You then type in what you see and therefore the form knows your not a bot and allows the form to be submitted. Here at DDA, we use these standard image versions but we have also introduced our own simple math equation version too.

As part of our website design standards, and thanks to our top notch programming team, all future forms for our clients with be built using some form of CAPTCHA system. But not resting on our laurels, as always, our team of expert website designers will keep a constant lookout for whatever future chaos spam artists try to throw at us next, and be sure we will be able to combat it just as effectively.