I saw a very interesting answer stating that something else than hdd or ssd can be infected : Can a computer virus be stored somewhere else than on the hard drive?
It is very important for me to be sure that I'm in a secured environnement, especially when I'm making a system image.
As for my question, I'd like to know the most effective way to determine if a firmware/hardware other than hdd/ssd is infected (and how to secure it if it is). I currently use Avira Antivirus + Malwarebytes Anti Malware. I want to be sure that my computer, when plugged offline, is secured after restoring my system image.
- Bios / Uefi
- System Management Mode (SMM)
- Network cards
- And possibly others I'm not aware of.
I know it is very difficult for someone to infect those elements, and unlikely to happen, but it is still in the realm of possibilities hence we should have the needed knowledge required to know if we are infected and to protect us against those.