Adds details and background on hack throughout
Feb 29 (Reuters) - UnitedHealth Group UNH.N said on Thursday that the recent cyberattack at its tech unit, Change Healthcare, was perpetrated by hackers who identified themselves as the 'Blackcat' ransomware group.
The company said its experts were working with law enforcement authorities and third-party consultants to gauge the impact on its customers and patients.
The statement confirms a Reuters report on Monday. UnitedHealth had initially blamed a "suspected nation-state associated cybersecurity threat actor" for the disruption.