The Spectre and Meltdown vulnerabilities proved that most of the CPUs made by Intel and AMD in the past 10 years are susceptible to code-based attacks and the current security model of bugs and patches needs to change at a fundamental level. Researchers at the University of Michigan might have the solution with the Morpheus CPU security architecture that renders processors virtually invulnerable even to the fastest electronic hacking techniques.
https://www.notebookcheck.net/Unhackable-Morhepus-CPU-architecture-announced-by-University-of-Michigan.420225.0.html