Originally published at: macOS Big Sur 11.6.3 and Security Update 2022-001 Catalina - TidBITS
Patches security vulnerabilities in Big Sur and Catalina. (Free, various sizes, macOS 11 and 10.15)
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Since installing this Catalina security update on my Macbook Pro, the machine had taken to shutting itself down at some point after I put it to sleep.
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Issue now being reported elsewhere: MacBook Air Reboots/Restarts After Catalina Security Update 2022-001 | MacRumors Forums