Tackling the Sefnit botnet Tor hazard

Sefnit, a prevailing malware known for using infected computers for click fraud and bitcoin mining, has left millions of machines potentially vulnerable to future attacks. We recently blogged about Sefnit performing click fraud and how we added detection on the upstream Sefnit installer. In this blog we explain how the Tor client service, added by…

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Protection metrics – November results

In our October results, we talked about a trio of families related to Win32/Sefnit. Our November results showed progress against Sefnit and the installers and downloaders of Sefnit (Win32/Rotbrow and Win32/Brantall). In comparison to September, active Sefnit infections have been reduced by 82 percent. As with prior months, our rate of incorrect detections also remained low and…

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