http://hackaday.com/2013/03/18/hack-removes-firmware-crippling-from-nvidia-graphics-card/
http://www.insanitybit.com/2012/06/02/nvidia-fbi-backdoor-what-the-hell-5/ http://www.sciencedirect.com/science/article/pii/S1742287615000559 https://www.extremetech.com/computing/205270-proof-of-concept-gpu-rootkit-hides-in-vram-snoops-system-activities https://arstechnica.com/security/2015/05/gpu-based-rootkit-and-keylogger-offer-superior-stealth-and-computing-power/
