Medical Eye Services, Inc. (MESVision) disclosed that an unauthorized individual exploited a vulnerability in its MOVEit file-transfer server to exfiltrate information on May 28 and May 31, 2023. The company discovered the incident on August 23, 2023. Affected data may include personal information of individuals enrolled in vision benefit plans. MESVision took the server offline, engaged a cybersecurity firm, reported to the FBI, and is offering credit monitoring services.