Covenant Health network hack claimed by Qilin

Ransomware gang Qilin today took credit for a May 2025 cyber-attack against Covenant Health in Massachusetts. Qilin has claimed to have stolen confidential files and has posted images of what it says are documents stolen from the network to prove its claim. 

Paul Bischoff, Consumer Privacy Advocate at Comparitech,provided the following comment: 

“Qilin is a ransomware gang that began claiming responsibility for attacks on its data leak site in late 2022. Based in Russia, Qilin mainly targets victims through phishing emails to spread its ransomware. It launched in August 2022 and runs a ransomware-as-a-service business in which affiliates pay to use Qilin’s malware to launch attacks and collect ransoms.”

“Qilin has claimed responsibility for 38 confirmed ransomware attacks in 2025 to date, plus 261 unconfirmed claims that haven’t been acknowledged by the targeted organizations.”

“Ransomware attacks on US hospitals, clinics, and other care providers can cripple critical systems and endanger the health, privacy, and security of patients. Hospitals must pay a ransom or face extended downtime, data loss, and putting patients and staff at increased risk of fraud. Hospitals and clinics might have to resort to pen and paper, cancel appointments, and divert patients elsewhere until systems are restored.”

Qilin has been very busy as they’ve claimed responsibility for a number of high profile attacks. This illustrates that you have to have your house in order to stop this gang and others like Qilin from making your life miserable.

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