Cybersecurity

UnitedHealth expects up to $1.6B hit from Change cyberattack this year

Dive Brief: UnitedHealth Group estimates costs from the Change Healthcare cyberattack could reach $1.6 billion this year, executives said on Tuesday. However, the managed care giant maintained its full-year earnings guidance, suggesting the financial fallout from the attack on the massive claims clearinghouse may be less serious than feared. The hit comes from direct response […]

Cybersecurity

Novel Ahoi attacks could compromise confidential VMs

Confidential virtual machines could be breached through two different types of novel Ahoi attacks, reports SecurityWeek. Intrusions leveraging the first technique, dubbed “Heckler,” involved the targeting of hardware-based trusted execution environments running on Intel’s Trust Domain Extensions and AMD’s Secure Encrypted Virtualization-Secure Nested Paging technologies with malicious hypervisors that sought to facilitate authentication evasion and […]