ElsewhereWhat happened
Someone typed your Mac's ID with the wrong passcode three times. It could be a typo from someone you're helping, or a stranger guessing.
Elsewhere made a new passcode, so the one they tried stopped working. This Mac shows how many wrong tries there were, and you got a notification.
Why your Mac is safe
The right passcode only lets someone ask. Nothing starts until you click Accept on this Mac.
After a few wrong tries, each one has to wait longer, so guessing is slow. And the passcode changes after every session anyway.
What to do
- If you're helping someone, read them the new passcode.
- If you weren't expecting anyone, decline any request you don't recognize.
- Share your ID and passcode only with someone you're talking to.
- To stop requests by ID, turn off Allow connections by ID and passcode in Settings > Sharing. Your own devices still connect.