There have been thousands of bugs, leaks, vulnarebilities found in hard and software in 2017 alone, some FAR worse than meltdown/spectre, these two just had the flashy names for the press to pick up and blow it out of proportion, not even a 8088 or 8080 CPU is free of bugs despite being very simple CPU's same with software, it is just that in the past it didn't matter, my XT didn't hang on the 'net 24/7 my Windows 95 machine had access for like 30 minutes a day, hacking a machine and taking it over didn't happen because most of the time the damn thing wasn't connected to the internet anyway and then only through a 56K modem..