[abdullahkhalids]

Before computers and internet, a manager might have been allowed to take work files home to work on them. Or workers on the road, might have stacks of company files with them in their car.

How did companies enforce the worker not taking the files with them on their international trip? Just by punishment when it was discovered after the fact. Things worked fine. It was good enough.

There is no need for additional surveillance, just because computers and internet can be used to do it.