Huge spam botnet Grum is taken out by security researchers
A botnet which experts believe sent out 18% of the world’s spam email has been shut down, a security firm said.
Grum’s control servers were mainly based in Panama, Russia and Ukraine.
Security company FireEye and spam-tracking service SpamHaus worked with local internet service providers (ISPs) to shut down the illegal network.
A botnet is a network of computers that has been hijacked by cybercriminals, usually by using malware.
“Grum’s takedown resulted from the efforts of many individuals,” wrote Atif Mushtaq, a security researcher with FireEye.
“This collaboration is sending a strong message to all the spammers: Stop sending us spam. We don’t need your cheap Viagra or fake Rolex.”
Mr Mushtaq wrote that on Monday he learned that a Dutch server involved in Grum had been shut down. He said it “at least made a dent” in the botnet.
On Tuesday, the command and control servers (CnCs) in Panama had been shut down.
“This good news was soon followed by some bad news,” he explained.
“After seeing that the Panamanian server had been shut down, the bot herders moved quickly and started pointing the rest of the CnCs to new secondary servers in Ukraine.
anyone who rids us of spam is a friend of mine 🙂