From the article: "IT security admins must understand that a computer can be compromised by almost any hardware device plugged into it. Hardware is hardware --

From the article: "IT security admins must understand that a computer can be compromised by almost any hardware device plugged into it. Hardware is hardware -- the instructions coded into it and its firmware takes precedence over software. When we talk trust boundaries in computer security, you always have to remember the hardware boundary must be discussed and defended. If I, as the attacker, can convince a victim to plug in some sort of hardware or if I plug it in myself, then it is, for all intense purposes, game over. If I can plug something into your USB, DMA, FireWire, and now mouse port, I'll likely succeed in carrying off a malicious action." Wow, what a lot of nonsense! Why would a hardware USB device necessarily have access over the whole computer? And the author doesn't even know that there is no different between a USB port and a mouse port ...