This isn't about bugs in the sense of "code that is incorrectly written for what it was meant to do." It's more about bugs in the sense of "code that was writte

This isn't about bugs in the sense of "code that is incorrectly written for what it was meant to do." It's more about bugs in the sense of "code that was written correctly, but which does not do things it should do because you either didn't think of or didn't care about them when you were writing it." It is easier and often simpler to allow vulnerabilities than it is to prevent them.