From Identity Finder:
Identity Finder Free Edition will detect unprotected credit cards and passwords on your computer that are vulnerable to identity theft or fraud. Once found, you can permanently shred or encrypt the information with a password so identity thieves cannot steal them. Take the first step towards protecting your family, your employees, and your business. Use free tools such as the File Vault to encrypt any file in Windows and the Digital Shredder to shred any file from Windows Explorer. Manage passwords securely in the Password Vault.