The idea that there is a magical technological improvement that will solve all (or "most", or even just "more than two") is about as plausible as the heralded a

The idea that there is a magical technological improvement that will solve all (or "most", or even just "more than two") is about as plausible as the heralded arrival of the singularity. The solution is to harden a bunch of stuff. Clearly, the ideal solution is to just remake it with security in mind, but that still leaves a ton of ground to cover.