https://en.wikipedia.org/wiki/Microcode https://danluu.com/cpu-bugs/ We saw some really bad Intel CPU bugs in 2015, and we should expect to see more in the future https://danluu.com/cpu-backdoors/ what could a backdoored CPU do, how could the backdoor be accessed, and what kind of compromise would be required to install the backdoor? https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219268 Blobs that fix exploitable things may be slightly better than blobs. Awareness should be raised, and updates applied to systems. Unless fixes are tricks to install more exploits ;)