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Anti-Spam and CAPTCHAS

by | Jul 19, 2012 | Blog | 0 comments

Last week I received an email from one of our clients because they were receiving a lot of spam from their website and they asked what they could do about it. It can be really frustrating when you are receiving junk emails and you have to filter through them to get to the important emails.

Unfortunately there are lots of spambots on the internet looking for forms to fill in, creating accounts from fake email addresses, building mailing lists for sending unsolicited e-mails. You may often find that the emails that you get will be adverts for products that you may not have requested, or asking you to follow a link to find out more information. Just be careful, as sometimes links on these can lead to viruses that are harmful to your computer.

There are a few ways to help combat this, such as spam filters on your computer and email. However they don’t always work and sometimes a genuine email can end up in your junk mailbox.

Using an anti-spam feature on your form (known as a CAPTCHA) you can determine whether the person filling in your form is human or not. They usually appear near the bottom of a form as a code or a distorted image, with a random series of letters that you must fill in to be able to submit the form. These systems often use a script to dynamically generate a random code that is different each time the page loads and isn’t readable by computers. This means that only when the CAPTCHA is filled in correctly will the form be sent.


an example of a CAPTCHAS image
 
There are a few ways to add this to your contact forms, such as easy to install plugins, or if are technical you can create your own or some websites have it built in.
 
If you want more information, or want a CAPTCHA test adding to your website forms, please call me on 0116 281 5131 or email hello@yourhyphen.co.uk.
 
More from me soon.
 
Richard

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