The dramatic decrease is the result of a coordinated attack by security firms and Internet service providers around the globe that took down a network of infected computers known as "the Grum botnet." ...

The Grum botnet was born. It took a few days, but ultimately 120,000 machines spoke to the Command and Control server in Moscow and the server messaged back. Some machines dropped out of the ...

Cybercriminals no longer control one of the world’s largest spam botnets, Grum, because all of the servers the botnet relied on for receiving commands were shut down, according to researchers ...

KrebsOnSecurity has obtained an exclusive look inside the back-end operations of the recently-destroyed Grum spam botnet. It appears that this crime machine was larger and more complex than many ...

Nearly four years after it burst onto the malware scene, the notorious Grum spam botnet has been disconnected from the Internet. Grum has consistently been among the top three biggest spewers of ...

So says the security firm that helped kill it. "The Grum botnet has finally been knocked down. All the known command and control (CnC) servers are dead, leaving their zombies orphaned," wrote ...

If you said there wasn’t as much spam lately that’s because researchers at FireEye and the venerable SpamHaus have essentially shut down the Grum botnet by marking and banning IP addresses.