A ransomware attack has hit a U.S. hospital network, and the perpetrators say they have posted stolen patient records on a dark web leak site. The breach underscores how health care systems remain a prime target for cybercriminals seeking sensitive personal and medical data.

According to the report, the incident affected multiple hospitals in the network. While the full scope of the compromise has not been detailed publicly, the exposure of patient information raises serious concerns about privacy, identity theft, and the disruption of care.

Hospitals and other health providers often face high pressure to restore systems quickly after an attack, making them especially vulnerable to extortion. Cybersecurity experts have long warned that attackers exploit that urgency, knowing delays can affect treatment and patient safety.

The case adds to growing pressure on health systems to harden defenses, improve backup planning, and limit the damage when intrusions occur. For patients, it is another reminder that medical records can become a target in a wider wave of financially motivated cyberattacks.