Exactly, the only other person able to react was my manager. And he does not have enough programming skills to understand the real danger. But my point if not

Exactly, the only other person able to react was my manager. And he does not have enough programming skills to understand the real danger. But my point if not so much about this guy and the problems we had. My question is more : What could / should be done to avoid this kind of developers to do more harm in other companies.