Interesting you say this, because this is EXACTLY what I have been saying for awhile, concerning making Haiku 100% secure. The problem is, no one is interested in "going back to the beginning", to actually accomplish this. Yet, is security not of paramount importance in this day and age of viruses, spyware, trojans, worms, ransomware, and malware/exploits of other types?
What would it be like to create an OS environment, where you didn't have to rely on simple abscurity (nobody cares about attacking Haiku, because it's not important or well known enough) to protect against such threats, but you could DARE people to try and attack your system and watch as they fail, time and time again? To do what no other OS made today actually does or can do?
But it would require a total rewrite of how Haiku interacts with the user and applications and the outside world (and no... that doesn't mean being disconnected from the internet, as someone once said). And no one is willing to do that because their precious "freedom" to do whatever they like in their system trumps never having to worry about what someone ELSE might want to do with their data.
If "freedom" equals data insecurity... is your data worth less than your freedom to do whatever on your computer? My data is a part of me. Destroy my computer... I couldn't care less. I can always build/buy a new one. But damage/erase my data and I've lost everything!
Backing up your data is always a good thing (I think I have too MANY copies of various data of mine across several thumb drives), but what about data of yours falling into the wrong hands? Passwords... personal information... files. Once is all they need... and they'll have it forever. 50 million backup copies won't do you any good then. Preventing the theft, in the first place, is what was needed. Is even a 1% chance of that type of compromise acceptable? Not in my book... because, sooner or later, it WILL happen. It's just a matter of time and chance... or opportunity and motivation.