The Biggest Cyberattack in the History of the Internet is Happening Right Now

The Spamhaus v. CyberBunker battle is raging now.

At this very moment, the largest cyber attack ever declared is emanating from a decommissioned, nuclear-war proof NATO bunker with five foot-thick concrete walls and a reputation for harboring spammers and cybercriminals. It’s all part of a dustup between CyberBunker—so named for the building just outside Kloetinge, in the Netherlands, that houses its servers—and the international non-profit Spamhaus.

CyberBunker does what its name suggests: It’s a safe place full of computers, which host websites and data stores for various companies. Spamhaus, meanwhile, tracks internet addresses that are sources of email spam, and adds their addresses to a blacklist. Companies that use this blacklist—which include pretty much every email provider and most internet service providers on the planet—automatically block those addresses.

Read more at Quartz.