Hmmmmm sounds sketchy to me and all too familiar;) Just be honest with whom ever you are trying to spy on. In your case not so sure it’s your son. Dishonest behavior warrants dishonest Repercussions! Let that sink in E.
Sounds like this dude is being deceitful in more ways than one then trying to gain access to “other devices i.e machines” to monitor what’s being accessed. The motive is very clear. Just saying