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Japanese cancer hospital confirms breach; Qilin gang claims responsibility

Posted on March 4, 2025 by Dissent

Stefanie Schappert reports:

The Qilin ransomware group said it is responsible for the February 10th hack of a prestigious cancer treatment center in Japan, exposing the sensitive health information of 300,000 patients and leaving its hospital system “unusable.”

The Utsunomiya Central Clinic (UCC) cancer treatment center first alerted the public to the ransomware attack on its website on February 18th, roughly a week after announcing it was experiencing technical difficulties with its network systems.

It appears that the clinic has been very transparent in informing patients about the attack and the types of information involved. They reportedly provided a comprehensive list of the patient data stolen from the cases of approximately 300,000 people:

  • Patient Name, date of birth, gender, address, telephone number, email address, medical information, health check information, etc.
  • Personnel information on doctors, nurses, and employees involved with the hospital; Name, date of birth, gender, address, telephone number, etc.

Read more at Cybernews.


Related:

  • A business's cyber insurance policy included ransom coverage, but when they needed it, the insurer refused to pay. Why?
  • Massachusetts hospitals Heywood, Athol say outage was a cybersecurity incident
  • The Alliance That Wasn’t: A Critical Analysis of ReliaQuest’s Q3 2025 Ransomware Report
  • Heritage Provider Network $49.99M Class Action Settlement
  • Qilin Ransomware and the Ghost Bulletproof Hosting Conglomerate
  • Integris Health Agrees to $30 Million Settlement Over 2023 Data Breach
Category: Health DataMalware

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