This is a great article about this subject: http://www.hermann-uwe.de/blog/physical-memory-attacks-via-firewire-dma-part-1-overview-and-mitigation http://www.h

This is a great article about this subject: http://www.hermann-uwe.de/blog/physical-memory-attacks-via-firewire-dma-part-1-overview-and-mitigation http://www.hermann-uwe.de/blog/physical-memory-attacks-via-f... It contains mitigation information for OSX, Linux, Windows and various flavours of Unix.