The BlackCat ransomware group attacked UnitedHealth subsidiary, Change Healthcare, in February 2024, compromising the data of 190 million individuals. The breach, one of the largest in US history, caused disruptions in the healthcare system, affecting pharmacies and delaying the processing of health claims. Change Healthcare paid a $22m ransom to retrieve the stolen data, but some was still leaked online and the hackers demanded further payments. UnitedHealth suffered estimated losses of $2 billion.
Warning issued over ‘fast flux’ techniques used to obscure malicious signals on compromised networks
Law enforcement agencies have warned that organizations face a common network vulnerability that allows hackers to dodge detection and distribute malicious software indiscriminately. Referred to
