trojans in the firmware [How can protect my drive]

[grarpamp]

There is a ongoing thread linked below about enhancing freebsd
kernel to only permit those opcodes needed for production use of
disk / usb / bios, and to filter out all others (of which firmware
updates, vendor specifics, fuzzing/bashing are all therefore blocked).
This obviously only for the system is clean to begin with, and not
bulletproof, but is defense in depth.

http://docs.freebsd.org/mail/current/freebsd-security.html