The Lehigh Valley Health Network (LVHN) has been the target of a cybersecurity attack by a ransomware gang known as BlackCat, which has been associated with Russia, according to a release from the healthcare network.

Lehigh Valley Health Network announced Monday it was the victim of a cyberattack by a ransomware gang but the attack did not disrupt operations at the network’s hospitals and offices.

On Feb. 6, LVHN detected unauthorized activity on its IT system and immediately launched an investigation, engaged leading cybersecurity firms and experts, and notified law enforcement, LVHN President and CEO Brian A. Nester said in a prepared statement.

The attack involved patient images for radiation oncology treatment and other sensitive information on a single physician practice in Lackawanna County, LVHN officials said.

Read the full article at Lehigh Valley Live.