probably the threat of being caught and subsequent consequences probably stop them. also (not saying Apple does and it's hard to do) but companies compartmentalize portions of software making it difficult for an individual to go rouge and break apart the security. higher up engineers probably could but the risk is pretty crazy especially with the new "we can just do whatever we want" terror laws that they would probably lay on them

> not saying Apple does and it's hard to do) but companies compartmentalize portions of software making it difficult for an individual to go rouge and break apart the security

Apple does this to an extreme. You can't even see the code to projects you are not on. Oh someone else's code has a bug? Well, you can do symbol search across the entire codebase but you will get the line featuring the symbol, the line above it and the line below it.

What would stop one or couple of TLA agents to get jobs as apple engineers, create a backdoor and then selling a "unlock service" trough some foreign intermediary making $1 mil each time to avoid VEP?