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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 posts:

  • Updating: CaptureRx incident impacted more than 2.4 million. List of Entities.
  • Choice Cancer Care Treatment Center notifies patients of May data security incident
  • Small-Scale Violations of Medical Privacy Often Cause the Most Harm
  • U.S. medical entities fall prey to Pysa threat actors, but many haven’t disclosed it – at least, not yet.
Category: Health DataMalware

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