Andover, Massachusetts-based Covenant Health, Inc. has informed authorities that a data breach discovered in May 2025 impacts more than 478,000 individuals. Covenant Health offers healthcare services at over a dozen locations across Massachusetts, Maine, New Hampshire, Pennsylvania, Rhode Island, and Vermont. The organization is informing customers that their personal and health information may have been compromised as a result of a hacker attack that occurred on May 18, 2025. The intrusion was discovered on May 26, and it took until December for Covenant Health to complete its investigation. Covenant Health first disclosed the data breach to the Maine Attorney General’s Office in July, when it reported that only 7,800 individuals had been impacted. In an updated notification to the Maine…