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Apple installs security updates in background. E.g.:

> Your Mac automatically installs background updates for the security configuration and data files used by macOS.

Source: https://support.apple.com/en-us/HT207005

In principle, yes. In practice my experience is that neither macOS nor iOS is very automatic. All it takes on macOS is for another user to be logged in, or for you not to leave your laptop on charger overnight, or a single app to be open that doesn’t automatically shut down. I don’t understand why iOS can go so long without doing it (I’ve seen it go weeks with an update notification & being plugged in every night)

>I’ve seen it go weeks with an update notification & being plugged in every night

Even tho you switched "Install iOS Updates" on?

Yes

Is Chrome more secure because it has its own update engine?

That article is not saying that Apple installs security updates automatically. It downloads data files and configurations, which doesn’t fix security vulnerabilities.

Good point; a more accurate example: https://9to5mac.com/2019/07/10/zoom-apple-macos-update/

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