My Mac was stolen.
I bought an iPad to use find my Mac. The computer went online and I received alerts. Unfortunately I wasn't on the iPad at that time.
After the Sheriff office got my computer back, it was completely obliterated. I had to enter my password to reinstall the operating system.
My question is that the computer has played a sound. I suspect it was deleted to avoid detection. After the Mac was deleted, the Mac could ping online while the thieves attempted to reinstall the OS without my password?