https://thehackernews.com/2013/12/ZeroAccess-Botnet-takedown-microsoft.html
Microsoft's Digital Crimes Unit has successfully disrupted the ZeroAccess botnet which has infected nearly 2 million computers all over the world.
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https://www.helpnetsecurity.com/2013/10/01/researchers-sinkhole-half-a-million-zeroaccess-bots/
In a race against time and ZeroAccess developers and botmasters, Symantec researchers managed to sinkhole a large chunk of the infamous P2P-based botnet
half a millionresearcherssinkholezeroaccessbots