Security vendor F-Secure reported that Sony’s Microvault USB memory key has a built-in fingerprint reader. The Sony MicroVault USM-F fingerprint reader software that comes with the USB stick installs a driver that is hiding a directory under “c:\windows\”.
A rootkit is a collection of tools (programs) that enables administrator-level access to a computer or computer network.
The security news site also noted that Sony’s MicroVault software available from Sony.net also contains the same problem.