Edit: I mostly want to stress that there’s a huge body of (largely proprietary) work on this topic. Thousands of skilled people have been full-time employed for decades thinking about exclusively this topic, on both the offensive and defensive side, in a continuously escalating arms race. Anyone just getting started on this topic has a couple of decades of literature review to catch up on before they should imagine that their proposals are novel. I don’t mean to discourage you if it’s a topic you find interesting, but you should bear in mind that the answer to “But has anyone thought of XYZ?” is “Yes” for basically all values of XYZ. There’s a lot of money at stake if the answer is no.