Security News > 2024 > February > Ransomware gang claims they stole 6TB of Change Healthcare data
The BlackCat/ALPHV ransomware gang has officially claimed responsibility for a cyberattack on Optum, a subsidiary of UnitedHealth Group, which led to an ongoing outage affecting the Change Healthcare platform.
Change Healthcare is the largest payment exchange platform used by more than 70,000 pharmacies across the United States.
In a statement published on their dark web leak site today, BlackCat said that they allegedly stole 6TB of data from Change Healthcare's network belonging to "Thousands of healthcare providers, insurance providers, pharmacies, etc."
"Being inside a production network one can imagine the amount of critical and sensitive data that can be found. The data relates to all Change Health clients that have sensitive data being processed by the company," BlackCat said.
The ransomware gang claims that they stole source code for Change Healthcare solutions and sensitive information belonging to many partners, including the U.S. military's Tricare healthcare program, the Medicare federal health insurance program, CVS Caremark, MetLife, Health Net, and tens of other healthcare insurance providers.
On Tuesday, the FBI, CISA, and the Department of Health and Human Services warned that Blackcat ransomware affiliates primarily target organizations in the U.S. healthcare sector.