> However, the one thing that is unique to USB is the nature in which USB storage devices are shared between multiple devices. That was half of my point. I wa

> However, the one thing that is unique to USB is the nature in which USB storage devices are shared between multiple devices. That was half of my point. I was not underestimating the vulnerability of SATA and other on-board communications protocols. I was ignoring them because the parts connected to these are generally not moved between machines. Yes, you could infect these devices and hope they spread through the secondary market to a desirable target, but the utility of such an attack is very limited.