This Feb 23, 2019, file photo shows the inside of a computer in Jersey City, N.J. Cybersecurity teams worked feverishly Sunday, July 4, 2021, to stem the impact of the single biggest global ransomware attack on record, with some details emerging about how the Russia-linked gang responsible breached the company whose software was the conduit. An affiliate of the notorious REvil gang, 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. (AP Photo/Jenny Kane, File)