OneBlood's virtual machines encrypted in ransomware attack

OneBlood, a major U.S. blood center, is responding to a ransomware attack that encrypted its VMware hypervisor infrastructure and disrupted IT systems used for collecting, testing, and distributing blood; the outage forced manual processes, reduced capacity, prompted over 250 hospitals to activate critical blood shortage protocols, and spurred a regional response including redirected donations and urgent appeals for O+ / O- and platelet donors while investigators and agencies assist and no attacker has publicly claimed responsibility.