I'm not certain whether the original question was more about securing your device from external entry, or about teams looking for an advantage. But either way, the link given by Joe would work. It is also a good place to send safety concerns.
Just to comment a bit on the topics...
Not really true. Locking a door doesn't prevent someone from breaking in, but it does deter. Putting a bomb shelter door on a house with windows doesn't make it safe. It just makes it really hard to enter and leave the house.
There are many ways to cheat in FRC, but there are also many deterrents. I don't think cheating takes place in FRC very often, and I don't think it would be as easy as presented.
I ask that you not speculate or scheme online because information that you discover but are above using as a cheat may be just what someone else is looking for. That is why the link exists. Do your part to show how a community should deal with security.
A few more thoughts...
Robots that gain weight, grow a new limb, or move when they shouldn't can be reinspected.
Students who impale an opposing robot with a pool noodle may be checked for performance enhancing compounds.
Robots that don't obey the laws of physics will be checked for alien technology and magic.
And yes, we think about it.
Greg McKaskle