CISEssentials

Media Sharing is off (macOS)

How to disable Media Sharing

Open System Preferences, go to General, then click Sharing.
In the list, uncheck Media Sharing.

More Mac checks

AirDrop is secured
AirDrop is restricted to Contacts Only so strangers nearby can't send files to your Mac.
AirPlay receiver is off
AirPlay Receiver is off so unknown devices can't stream content to your Mac's display.
App Store updates are automatic
Mac App Store apps update automatically, closing known vulnerabilities without waiting on the user.
Application updates
macOS and the third-party apps installed on your Mac are kept patched, since outdated apps are a primary attack vector.
Automatic Login is off
Automatic login lets anyone access your account at boot without entering a password or using Touch ID.
Boot is secure
macOS's built-in boot-time protections (System Integrity Protection and secure boot) are active and not bypassed.