Covenant Health data breach after ransomware attack impacted over 478,000 people

Security Affairs

January 2, 2026 at 3:30 PM

Actively Exploited

Overview

Covenant Health, a healthcare organization based in Andover, Massachusetts, experienced a significant ransomware attack in May 2025, attributed to the Qilin group. This incident compromised the personal data of over 478,000 individuals, raising serious concerns about patient privacy and data security. Affected individuals may have had their sensitive health information exposed, which could lead to identity theft and other security risks. The breach emphasizes the ongoing vulnerabilities within the healthcare sector, where attackers increasingly target patient data for ransom. As healthcare providers continue to digitize their services, the need for robust cybersecurity measures becomes more pressing.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Personal data of over 478,000 individuals, including sensitive health information.
Timeline: Newly disclosed

Original Article Summary

Covenant Health suffered a ransomware attack by the Qilin group in May 2025, compromising data of over 478,000 individuals. Covenant Health, Inc., based in Andover, Massachusetts, is a healthcare organization that provides medical services and patient care. Covenant Health operates hospitals, clinics, or related healthcare facilities in multiple states, including Massachusetts, Maine, New Hampshire, Pennsylvania, […]

Impact

Personal data of over 478,000 individuals, including sensitive health information.

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Not specified

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Ransomware, Data Breach.

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