Comment by shripadk

This has nothing to do with trust. One terror attack and the employees and their families would be getting back at the management for lax security and having made the big mistake of trusting their lives with the company. Workplace violence is a thing and it's better for everyone to go through security checks than risk liability. You never know how, when or why someone snaps (however mentally stable s/he was during recruitment). And if you think it's impossible for something like that to happen, just take a look at what happened at YouTube HQ few months ago.