Security News > 2023 > December > Ransomware gang behind threats to Fred Hutch cancer patients
![Ransomware gang behind threats to Fred Hutch cancer patients](/static/build/img/news/ransomware-gang-behind-threats-to-fred-hutch-cancer-patients-medium.jpg)
The Hunters International ransomware gang claimed to be behind a cyberattack on the Fred Hutchinson Cancer Center that resulted in patients receiving personalized extortion threats.
Fred Hutch is a Seattle-based cancer research and patient care and treatment center operating a network of more than ten clinical sites in the region.
Today, the ransomware group Hunters International has added Fred Hutchinson to their extortion portal on the dark web, threatening the healthcare organization with leaking 533.1GB of data allegedly stolen from its networks.
Last week, it was reported that the threat actors responsible for the attack on Fred Hutch were emailing patients individually, threatening them with public disclosure of their sensitive data.
As reported by the Seattle Times, the attackers emailed many patients stating they have the names, Social Security numbers, phone numbers, medical history, lab results, and insurance history of over 800,000 patients.
TransForm says ransomware data breach affects 267,000 patients.