Original sentence: The "Stoned" bootkit, a MBR rootkit presented by Austrian software developer Peter Kleissner at the Black Hat Technical Security Conference USA 2009, has been shown capable of tampering Truecrypt's MBR (but potentially any other hard disk encryption software's too, if they don't rely on hardware-based encryption technologies, like TPM) effectively bypassing Truecrypt's full volume encryption
Edited sentence: The "Stoned" bootkit, a MBR rootkit presented by Austrian software developer Peter Kleissner at the Black Hat Technical Security Conference USA 2009, has been shown capable of tampering Truecrypt's MBR (but potentially any other hard disk encryption software's too, if they don't rely on hardware-based encryption technologies, like TPM) effectively bypassing Truecrypt's full volume encryption..