It's sad to see this. I hope you all do well.
He gave the guy access to his computer against my sternest warnings and his bank accounts were drained- wiped out.
Has he tried contacting the bank? Here in the UK in this kind-of case, your bank will always give you the money back.
It's not the case everywhere. You have to deal with tons of questions why have you given the computer bla bla, and if the anwser is not up to the mark they will ask you to get on your own.
Wow thats awesome. Here in my country nobody cares about your stolen money