I don't know how old the agent's MacBook was, but since at least 2012 most components have their own individual serial numbers that are associated with the comp

I don't know how old the agent's MacBook was, but since at least 2012 most components have their own individual serial numbers that are associated with the computer. So even if someone too clever by half starts swapping the logic board your Apple computer will call home and get flagged if the numbers don't match.