This makes sense but also an employee who is dishonest is also a security risk; fired or not.

It's ridiculous that companies don't seem to care about ethics. They never seem to select candidates based on proven ethics. They don't even ask any such questions.

For example, I've been in at least 2 situations where I had the ability to inflict major damage to companies which had treated me very poorly and I could have legally gotten away completely whilst doing variants of 'the wrong thing' and profiting but I didn't do it because I have principles. Unfortunately it seems that few people do nowadays. Leaders are fooling themselves if they think they can completely factor out ethics and make it all about aligning incentives. Incentive alignment creates its own problems as this alignment requires constant maintenance and it's both expensive and detrimental in the long run. These people will tend to sabotage every aspect of their responsibilities which isn't directly measured... In order to gain leverage. It's not clever. It's crooked. Should not be rewarded.

My experience as a software developer is that managers alway have lots of blind spots and the wrong people will take advantage of all of them, even when it negatively impacts the company.