money companies waste on internet surveillance and security is sorta ridiculous. if your employees aren't getting their jobs done, they aren't getting their jobs done, it really doesn't matter exactly why (whether they're looking at pornsites or whether they are clipping their toenails)
and as far as security regarding files and such, one time i had my access denied on something on the computer until i went and told my boss (who designed the access code system) that it was really pretty stupid to deny my access when i could simply walk right upstairs to the file room and get copies of the same stuff i was trying to get on the computer in hardcopy AND a whole lot more.
and well, even IF that was a fairly simple example, my point would be- where there is a will, there is always a way and you aren't probably going to stop anyone who is seriously trying to get in from getting in.
and well, you know? the field of biometrics? where people use fingerprints or eyeball images to identify themselves to computers- well what's to stop someone from killing you or cutting off your finger or cutting your eyeball out to get access if they want it bad enough?