The ALPHV/BlackCat ransomware gang has shut down its servers amid claims that they scammed the affiliate responsible for the attack on Optum, the operator of the Change Healthcare platform, of $22 million.
The BlackCat/ALPHV ransomware gang has officially claimed responsibility for a cyberattack on Optum, a subsidiary of UnitedHealth Group (UHG), which led to an ongoing outage affecting the Change Healthcare platform.
A cyberattack on UnitedHealth Group subsidiary Optum that led to an ongoing outage impacting the Change Healthcare payment exchange platform was linked to the BlackCat ransomware group by sources familiar with the investigation.
Healthcare giant UnitedHealth Group confirmed that its subsidiary Optum was forced to shut down IT systems and various services after a cyberattack by "nation-state" hackers on the Change Healthcare platform.