HostExploit presents the latest report on the Top 50 Bad Hosts and Networks, for Q4 2011.

There is one common denominator in cybercrime – it is hosted, served, or trafficked by some host or network operator somewhere. It could be assumed that such a succinct, yet true, statement should yield, in return, an equally concise solution. In fact, it provides only a place to start, albeit a very good one, in the complex world of cybercrime.

It has been a few years since the HostExploit "Top 50 Bad Hosts and Networks" reports began, during which time we have published, each quarter, the results of our analysis on all the world’s publicly-announced Autonomous Systems (ASes) which are serving and delivering, unwittingly or otherwise, malicious activities.

Luckily, we are not alone in seeing the value in presenting this comparative data (see report for a full list of our community partners). Through a range of charts and tables we give an overview on where internet badness is located. The aim is to encourage service providers to "clean up" and to be proactive in stopping the cybercriminal activities found on their servers.

Also, once again, Group-IB, Russia and the CIS’s leading computer security company (specializing in the investigation of computer crime, information security breaches, and computer forensics) collaborated with us to publish our report in both English and Russian.