Michał Kowalczyk has an interesting presentation on Intel BIOS reversing, focusing on a Toshiba system. Presentation is in Polish. If you have a Toshiba, see the excerpt below with advisory info.
https://twitter.com/q3k/status/928672822808973312
Oficjalne stanowisko Toshiby
Toshiba is working on a temporary BIOS update that can be used to prevent the security issue that has been raised and expects to release this update on its website within the next 2 weeks.
Toshiba plans to start the release of a permanent fix for some models from January, 2018 and will complete the releases of permanent fix for all applicable models by the end of March 2018.
Click to access bd81619010b3b8ef012ff8af491a034bd9c6c3adfd76ddbb180c43c15f291fc1.pdf
Firmware Security 