Spam

Acquia has announced the end of life for Mollom, the comment spam filtering service.

Mollom was created by Dries Buytaert and Benjamin Schrauwen, and launched to a few beta testers (including myself) in 2007. Mollom was acquired by Acquia in 2012.

We previously wrote in detail about how botnets hammering a web site can cause outages.

Here is another case that emerged in the past month or so.

Again, it is a distributed attempt from many IP addresses all over the world, most probably from PCs infected with malware.

Their main goal seems to be to add content to a Drupal web site, and trying to register a new user when that attempt is denied because of site permissions.

The pattern is like the following excerpt from the web server's access log.