Comment by bachmeier

I have to agree. You can keep pulling that logic back another step (and that seems to have been happening for many steps now) to the point that you no longer have the ability to use the computer.

This can't be dismissed as "slippery slope" logic either. Should elderly people with a bank account be allowed to use a computer? They might read something online and give their savings to a scammer. Frankly, that's a far more convincing argument than the one given here. There's only one solution if your objective function is exclusively to minimize the possibility of a security incident.