Got me curious. Quick search and I found three windows drivers that had keyloggers hidden in them. Go figure it was HP!

• HP Notebook Keyboard Drivers: Keylogging code was discovered in the SynTP.sys file, which was part of the Synaptics Touchpad driver shipped with certain HP notebook models.

• HP Audio Drivers: Researchers found keylogging features within the Conexant HD Audio Driver (specifically version 1.0.0.46 and earlier) used in various HP laptops and other Windows systems.