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.
Microsoft has started testing support for Wi-Fi 7 in Windows 11, which offers multi-gigabit speeds and improved throughput, latency, and reliability compared to previous Wi-Fi generations.
Microsoft has started force installing Windows 11 23H2 on eligible devices that have reached or are close to their end-of-servicing date.
The samples seen by Sophos in this week's attacks were a buhtiRansom LockBit variant dropped on 30 different customer networks and a second payload created using the leaked Lockbit builder (and dropped by a different threat actor).