The Kraken botnet was the world's largest botnet as of April 2008 . Researchers say that Kraken infected machines in at least 50 of the Fortune 500 companies and grew to over 400,000 bots. It was estimated to send 9 billion spam messages per day. Kraken botnet malware may have been designed to evade anti-virus software, and employed techniques to stymie conventional anti-virus software.
In April 2008, Damballa released instructions for removing Kraken malware from computers and a list of IPs comprising the Kraken botnet. The list shows that on April 13, 2008, there were 495,000 computers in the Kraken botnet.
 See also
 External links
- Fisher, Dennis, Kraken botnet balloons to dangerous levels, SearchSecurity.com, Apr. 7, 2008, retrieved 2008-04-07
- Orion, Egan, There's a new botnet worm on the loose: Kraken seeks to sink the Fortune 500, The Inquirer, April 7, 2008, retrieved 2008-04-07
- Neri, Kraken Botnet, la Botnet mas grande del Mundo, retrieved 2008-04-07, en español.
- Pierce, Cody, Owning Kraken Zombies, a Detailed Dissection, 2008-04-28, retrieved 2008-04-28
- Amini, Pedram, Kraken Botnet Infiltration, 2008-04-28, retrieved 2008-04-28