The covered entity (CE), Harbor Health Services, reported that its business associate (BA) was the subject of a ransomware attack that affected the protected health information (PHI) of 901 individuals. The PHI involved included names, dates of birth, addresses, Social Security numbers, claims information, diagnoses, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In its mitigation efforts, the CE and BA implemented additional administrative, technical, and security safeguards to better protect sensitive data.