The computer was sent off to Apple for applecare+ repair, but when we got it back, the key is no longer in Keychain Access. It's gone.
Some of my students are cybersecurity majors, and they're doing a "class project" trying to crack in during downtime on our university's super computer.
Outside of just being bummed at losing 2 years of content, is there anything to be done that I haven't thought of?
Many thanks!