U.S. hospitals face growing ransomware threat: security group

U.S. hospitals should brace for a surge in "ransomware" attacks by cyber criminals who infect and shut down computer networks, then demand payment in return for unlocking them, a non-profit healthcare group warned on Friday. The Health Information Trust Alliance conducted a study of some 30 mid-sized U.S. hospitals late last year and found that 52 percent of them were infected with malicious software, HITRUST Chief Executive Daniel Nutkis told Reuters. The most common type of malware was ransomw