The U.S. Health and Human Services Department (HHS) is working to reboot healthcare systems after a cyberattack caused by Russian ransomware group, BlackCat, on UnitedHealth Group’s subsidiary, Change Healthcare. The attack resulted in significant disruption to the processing of various healthcare payments and prior authorisations. UnitedHealth Group admitted multiple layers of its services had been affected and confirmed it was striving to find workarounds to resurrect operations.

New iOS Critical Vulnerability That Could Brick iPhones With a Single Line of Code
A critical iOS vulnerability (CVE-2025-24091) allows malicious apps to permanently disable iPhones using a single line of code, triggering endless reboot cycles. This flaw, leveraging