The trick with defeating cold boot attacks (aka freezing the RAM) is easily mitigated by a system administrator that forces the system to hibernate instead of s

The trick with defeating cold boot attacks (aka freezing the RAM) is easily mitigated by a system administrator that forces the system to hibernate instead of sleep (aka write volatile memory to disk). It can also be mitigated by requiring not just the TPM chip, but also a PIN, PASSCODE, or a PASSCODE that is cycled ever 60 seconds or so (on something like an RSA fob). This presumes the system has a TPM chip, or a similar mechanism that can provide an original point for a trusted boot.