> consider how many bugs you've been responsible for over the course of your career that you didn't intend.

Through some amount of carelessness that ended up costing people money? 0.

Maybe 1 if you want to count the automated monthly charging system that did over charge (extra erroneous charges for the same month) a handful of clients too many times. I noticed before anyone else did, and all of those 1am charges were reversed before 4am. So I don't think that one counts because it was a boring bug that would have been very bad if I wasn't paying attention.

Incompetence to the point of negligence can reasonably be considered malicious. If you're an engineer by trade, you have an ethical and professional responsibility to make sure things like this can't happen. And then, when bugs introduce said complications, fixing them, and remediating the damage.