I just bought a used macbook air 2015 I made a system restore... and was confident the mac is not stolen because of these checks
1- there were no icloud on the computer, and I was able to add my own iCloud normally.
2- the mac firmware had no password
but now, I see something that I have never seen before
I keep seeing this message, always skipping it
1- what are the consequences of allowing DEP, and is it reversible?
2- how to contact the person who has DEP and ask them to remove it from the program?
3- when buying a new mac, how to know if it's on DEP? (the most important question)
4- someone on IRC said that if i was unable to authorize my machine from itunes then the machine is on DEP.. is this correct?
5- the same person on IRC says that there could be a previous owner, and this owner can format my computer and see all of my files even if i have my own icloud on it, is this correct?
the person who sold it to me imported 60 macs from a closed startup in sweden, I can return it to the seller and get my money back, but I really need an answer for these questions...