I would recommend having a look at advanced side-channel PCIe bus DMA taps used by game cheats. They use a second computer along with an external HDMI mask-overlay mixer, to dump the target computers internal game-engine state through unencrypted DMA access to the overlay channel. Thus, gives the cheaters x-ray vision and aim-bot features for games protected by kernel level anti-cheat software.

Highly entertaining nuisance users. =3

Does this work with IOMMU?