This looks to be the old firewire-DMA attack, with a similar thunderbolt-DMA implementation as well. I was of the impression that these attacks no longer worked

This looks to be the old firewire-DMA attack, with a similar thunderbolt-DMA implementation as well. I was of the impression that these attacks no longer worked since recent machines limit IO DMA access to RAM. Also, they would require the computer to be running (or at least suspended) to have any chance to work. In short, sounds like a non-story.