Check for unauthorized remote access to my Macbook
Before calling into support, what should I check to see if there has been unauthorized remote access to my MacBook (Pro M1)? I know basic checks like making sure my Apple ID (email address), My name and personal info hasn't been changed (as explained by a support rep on a recent call). However, I don't recall a few other checks he had me perform (and said I could start with in the future) as I was preoccupied with solving the issue at hand at the time. I didn't stop to write them down. We touched on the topic during some downtime while troubleshooting.
Thanks in advance!
MacBook Pro 14″, macOS 15.1