First off, let's start with the exact notification you encountered on your MacBook Pro:

macOS updates have been installed. This computer will restart in 60 minutes. Please save anything you are working on and log out by choosing Log Out from the bottom of the Apple menu.

You’re absolutely right to notice this feels off—this notification doesn’t match Apple’s standard style in four key ways:

• Tone: Apple’s official system messages are always concise, polished, and use consistent, user-centric language. This one reads like generic, unpolished text, not the tight, familiar phrasing you’d expect from Apple.
• Unfamiliar, unnecessary icon: Official macOS update notifications use recognizable, standard icons (like the Software Update or App Store badge). A random, unknown icon attached to this alert is a major red flag.
• Forced restart with no user choice: Apple almost always gives you control over when to restart for updates—options like Restart Now or Remind Me Later are standard. A non-negotiable 60-minute forced restart with no alternatives is totally out of character for Apple’s UX.
• Mismatch with App Store/Notification Center style: Official update alerts in Notification Center or from the App Store follow a specific, consistent layout. If this notification looks visually different from what you’re used to, that’s another clear sign it’s not legitimate.

This suspicious prompt raises three critical concerns (even though you didn’t finish listing them, they likely center on verifying the update’s legitimacy, checking for potential malware, and figuring out how to stop the forced restart).

内容的提问来源于stack exchange，提问作者Crowder