The Attorney General is sharing consumer protection reminders following a ransomware attack at the Grand Blanc McLaren Health Care that could affect large numbers of patients.

Cybercriminal gang ALPHV has claimed responsibility for the theft of the sensitive personal health information of 2.5 million McLaren patients. In a message posted on the dark web last week, ALPHV claimed the McLaren data was on the dark web and would be released in a few days unless a ransomware payment was received.

The actual number and identity of affected patients is unknown, as is the type of personal health information. McLaren has said it had found no evidence to suggest the group still has access to its IT systems.

The healthcare provider has retained security experts and is in touch with law enforcement.

McLaren reportedly detected suspicious activity in its IT systems in August and later confirmed the ransomware attack. Its computer network was taken offline while the incident was investigated.

Besides taking steps to protect your medical information, it is important to know the warning signs when someone is using your medical information.

If you receive a notification letter or hear news about a data breach at one of your medical providers, take steps to secure your medical and financial accounts.