Re: iOS PCs?
Every injection vector found in Unix was available in ALL of its progeny. Windows' issues regarding virus stems from its availability to content. My IIc had less than a dozen applications worth a toss while my 8086 would have been closer to 100 and we trafficked them on BBS across the globe.(shout out to EvilOtto in Oslo and LordOak for ThePoison) In the old days, think pre-Dark Avenger, it was a race playing connect the dots and the larger log was king dingaling and not some douche gaining root and nutting things. No one was even thinking of splooging all over the (oh so available to anyone with a student id) nix servers because that's where uber types were sequestering their tool kits, the kids (me) got their BBS/IRC info and those flogging term papers (big coin) hid their wares.
I'd bet we didn't see all the damage until those hard core types, think Iron Curtain countries, went postal over folks with infinitely less skills in the West bragging it up (the IRC logs were painful to read then, we were indeed a$$hat$) about the money being made in virgin IT territory. There were some seriously pissed types being left out of the loop then and people tend to forget those cats had to work with garbage gear so when we were moving into using more wordy languages for convenience sake because our new gear afforded us the cycles to get lazy with things, they were just writing tighter and tighter code. Some of them then decided to blacken a few eyes and boy did they ever.
Apple wasn't similarly afflicted not because Unix couldn't be hit but because MS was the most available face of the arrogant West and some cats wanted to put a fist into that face.