The World’s Top Spamming Botnets: Signs of a mature ‘market’ with established botnets and no newcomers on new list compiled by SecureWorks

RSA Conference 2011 — The world’s biggest and most prolific spamming botnet is now Rustock, with a 250,000 head count of bots, and its size and staying power have much to do with its constantly evolving stealth tactics, according to new research.Joe Stewart, director of malware research for Dell SecureWorks Counter Threat Unit, says Rustock hit the No. 1 spot thanks to its developers constant evolution of the code base. The rootkit-based malware can hide from antivirus software and employs several advanced techniques to evade detection.
http://www.darkreading.com/insider-threat/167801100/security/attacks-breaches/229218736/the-world-s-top-spamming-botnets.html

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