Dan Geer is wrong. I already made the argument, upthread. I'm responding to your appeal to his authority with an appeal to my own experience. It has gotten harder to break into things, not easier. The Morris Worm was arguably bigger deal than NotPetya --- certainly, it was more sophisticated. Every couple years, there's some malware or other that manages to infect huge numbers of machines. IIRC, Nimda took down the entire Naval Marine Corps Internet. They said then that we had crossed some threshold, and from now on attackers were just going to get worse. Who cares? Guess what: the opposite thing happened.