Apple releases official version of macOS Big Sur 11.6.4 to improve macOS security

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Author｜Lin Guozhen

On February 15, Apple released macOS Big Sur 11.6.4, a security-fix update designed for Mac users who continue to use the Big Sur operating system instead of macOS Monterey.

Additionally, the macOS Big Sur 11.6.4 update is available for download on all eligible Macs through the Software Update section of System Preferences. It should also be said that Apple has also updated the release notes, saying that macOS Big Sur 11.6.4 "improves the security of macOS" and is recommended for all users. Additionally, Apple has released the 2022-002 macOS Catalina security update for those still running macOS Catalina.