I don't know about giving up, but it is very much cat and mouse. Over a long enough timeline, the bad guys will generally score, prompting another round of coun

I don't know about giving up, but it is very much cat and mouse. Over a long enough timeline, the bad guys will generally score, prompting another round of counter-measures. So, it's not that the defenses can't possibly work. It's actually that they do, until they don't.