Up to 600,000 Exposed in Cyberattack on Michigan Healthcare Companies

The personal information and medical data of more than 600,000 people in Michigan may have been compromised in a cyberattack, the state’s attorney general said. Hackers may have accessed the names, addresses, social security numbers and medical information of customers of several Michigan healthcare companies, including Blue Cross Blue Shield of Michigan, Health Alliance Plan and McLaren Health Care, Dana Nessel said.