One chestnut from my history in lottery game development:
While our security staff was incredibly tight and did a generally good job, oftentimes levels of paranoia were off the charts.
Once they went around hot gluing shut all of the “unnecessary” USB ports in our PCs under the premise of mitigating data theft via thumb drive, while ignoring that we were all Internet-connected and VPNs are a thing, also that every machine had a RW optical drive.
Just manually copy-paste everything. That never goes wrong, right?
I mean, it’s what the Security guys do, right? Just copy+paste everything, mandate that everyone else does it too, Management won’t argue because it’s for “security” reasons.
Then the Security guys will sit around jerking each other off about how much more secure they made the system