Ransomware Attack Affects Hundreds of Businesses

The attack centered on a Florida-based technology company called Kaseya.

The single biggest global ransomware attack yet continued to bite Monday as details emerged on how the Russia-linked gang responsible breached the company whose software was the conduit. In essence, the criminals used a tool that helps protect against malware to spread it widely. An affiliate of the notorious REvil gang, best known for extorting $11 million from the meat-processor JBS after a Memorial Day attack, infected thousands of victims in at least 17 countries on Friday, largely through firms that remotely manage IT infrastructure for multiple customers, cybersecurity researchers said. REvil was demanding ransoms of up to $5 million. But late Sunday it offered in a posting on its dark web site a universal decryptor software key that would unscramble all affected machines in exchange for $70 million in cryptocurrency. It wasn't clear who they expected might pay that amount.