The fingerprint-recognition software packaged with Sony's Microvault USB installs itself as hidden files on the user's system under the "c:\windows\" directory
F-Secure security expert, Mika Tolvanen, reported that it is possible to enter the hidden directory using a Command Prompt and from there create and run new hidden files.
"Files in this directory are also hidden from some antivirus scanners — as with the Sony BMG DRM case — depending on the techniques employed by the antivirus software. It is therefore technically possible for malware to use the directory as a hiding place," said Tolvanen on the F-Secure blog.
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