Last month's cyberattack on Change Healthcare has had a multimillion-dollar impact on providers and other industry members. The U.S. State Department has announced a reward of up to $10 million for information leading to the identification or location of anyone who holds a key leadership position in Blackcat, the ransomware group believed to be behind the hack. The department is also offering up to $5 million for information leading to the arrest or conviction of anyone participating in or conspiring or attempting to participate in a ransomware attack using the ALPHV/Blackcat variant.

Blackcat, also called Noberus and ALPHV, steals sensitive data from institutions and threatens to publish it unless a ransom is paid, according to the U.S. Department of Justice. Blackcat has compromised computer networks worldwide and caused hundreds of millions of dollars in losses, it said. In a since-deleted post on the dark web, Blackcat claimed it was behind the attack on Change Healthcare's systems. The group said it managed to extract six terabytes of data, including medical records, insurance records and payment information.