Well, that trust broke him instantly. I'm not sure if he is not totally aware of the possible hacks but he just let someone do it in front of him because of such trust thing that he endures to someone who couldn't be trusted. I can't imagine losing it but to say, it was really happening and could happen to anyone in the future.
This actually gives a lesson, not only for him but also for everyone who keeps their keys/password on the laptop/PC. If it needs some repairs, it was best to do it ourselves or to rely on a close and trusted friend of yours, that was guaranteed safe, I think.