That a good, cautious stance. That said, thus may not be a good example of it. We don't know the imessage bug, but a big one was patched in ios 9.3.3, released

That a good, cautious stance. That said, thus may not be a good example of it. We don't know the imessage bug, but a big one was patched in ios 9.3.3, released July 18, 2016. Meanwhile, the article says this exploit got a lot of people in 2016/2017. So, presumably simply updating software would have protected a lot of the victims in this case. The higher up in adversary skill level you go, the less this works. But up to a reasonably high level simply having up to date software thwarts most adversaries, no? And conversely, if you have very out of date software, even incompetent adversaries can break in.