Highlands Oncology Group security incident history
Hacking, data breaches and other security incidents involving Highlands Oncology Group, with related coverage.
Incidents: 1 · Most recent
Highlands Oncology Group ransomware affects over 110,000 people
113.6kImpact: 113,575 people affected
US cancer care provider Highlands Oncology Group discovered a ransomware attack in June 2025 and reported that 113,575 people were affected. An investigation found that the attackers had accessed its systems since January, and the Medusa group claimed to have stolen data. It subsequently became the subject of a law firm investigation into the leak of patient records.
Related reports: 3 · last report →