Security Techniques

Kelihos P2P Botnet Leveraging Composite Blocking Lists

Kelihos P2P Botnet Leveraging Composite Blocking Lists: Kelihos, the peer-to-peer botnet with nine lives, keeps popping up with new capabilities that enable it to sustain itself and make money for its keepers by pushing spam, harvesting credentials and even stealing Bitcoins.

According to a number of sources, Kelihos is now leveraging legitimate and freely available security services that manage composite blocking lists (CBLs) to determine if a potential victim’s IP address has previously been flagged as a spam source or as a proxy. A CBL is a blacklist of IP addresses known to be participating in spreading spam or malware.

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