A cyber-attack that sent US based Ascension hospitals and health care systems offline in May happened because a worker accidentally downloaded malware, officials said this week. “Clinical operations” were affected at Ascension hospitals and medical centers, which operate in Michigan and 18 other states, when a cyber-attack forced the organization to transition to offline systems in early May. It was later said that the attack was actually a ransomware attack, meaning someone (or a group) brok