items tagged with joomla

• Hashcash is not intrusive, user has nothing to do to enter a comment (the cryptographic anti spammer check occur in the background)
• SecurityImages use captcha, and so force user to enter character he has read in an image

Akismet Automatic Kismet (Akismet for short) is a collaborative effort to make comment and trackback spam a non-issue and restore innocence to blogging, so you never have to worry about spam again. When a new comment, trackback, or pingback comes to your blog it is submitted to the Akismet web service which runs hundreds of tests on the comment and returns a thumbs up or thumbs down. With Akismet, you're always protected up-to-the-second from the latest dirty tricks of spammers. There's no maintenance, no upgrading, no hassle.

This work as webservice, so code changes are minimal and quite easy to do

<?php include ($mosConfig_absolute_path.'/administrator/components/com_securityimages/client.php'); ?>
<?php echo insertSecurityImage("security_refid"); ?>
<?php echo getSecurityImageText("security_try"); ?>
<?php echo getSecurityImageTextHeader(); ?> 
<?php echo getSecurityImageTextHelp(); ?>
<?php echo getSecurityImageField("security_try"); ?>  

The code above insert the image, and the text,
You page normally submit information to the server for processing.
Most of the time, the last 2 lines are inserted in a <form>

include ($mosConfig_absolute_path.'/administrator/components/com_securityimages/server.php');

$checkSecurity = checkSecurityImage($security_refid, $security_try);

if $checkSecurity = true //then the user has entered the right text.