Rustock Botnet Flatlined, Spam Volumes Plummet
Summary: Spam volumes worldwide dropped sharply on Wednesday after dozens of servers coordinating the Rustock botnet stopped operating almost simultaneously, with the Composite Spam Blocklist showing Rustock spam virtually disappearing around 2:45 p.m. GMT. The CBL estimated at least 815,000 Windows computers were infected with Rustock, which had been sending one to two thousand emails per second before the drop to roughly one to two per second.
Bottom line: Roughly 815,000 infected Windows machines remain infected and only lost their shepherd, and Rustock carries a mechanism for randomly generating new command-and-control domains the botmaster could register to regain control of the herd.
Read the original at Krebs on Security ↗
- Topics
- Data Breaches
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