Big Sur - Disable AirDrop

Information

AirDrop _MUST_ be disabled to prevent file transfers to or from unauthorized devices.
AirDrop allows users to share and receive files from other nearby Apple devices.

Solution

This is implemented by a Configuration Profile.

mobileconfig profile info:

com.apple.applicationaccess:
allowAirDrop:
False

See Also

https://github.com/usnistgov/macos_security