[viraptor]

There's some space been the extremes. You're normally not allowed to say anything that would be a company secret, but nothing should stop you from consulting on Amazon Marketplace as long as you use only public information you know very well. If you're already past ignoring company secrets, is unlikely preventing other employment would stop you already.

As for actual fixes, I think safety critical systems already have some answers: require 2 person confirmations, audit access, correlate repeated issues.

[cma]

Mandatory vacations of certain length without system access is another common one.

[wmeredith]

This is a good one. If you’ve been tending to something rotten this gives others a chance to smell it.