Set AirDrop and Nearby Share to Contacts Only, Not Everyone

Left on 'Everyone,' file-sharing features like AirDrop and Nearby Share let any stranger within range send you a photo, link, or file with a single tap — no pairing, no request you can silently ignore ahead of time. In crowded places, this has been used to send unwanted or explicit images to random phones nearby.

A small system beats vigilance: set it once and stop worrying about it. Switch the setting to 'Contacts Only' and turn it back to 'Everyone' only for the few minutes you actually need it.