10. Keep your documents private in a virtual safe on your hard drive. Safe One (steganos.com) lets you create two 1GB safes for your files. These can be protected with a normal password (Safe One will help you generate a strong one), a picture password or device key such as a USB key, mobile phone or camera.
11. You can easily encrypt specific files and folders in XP and Vista. Choose Start, All Programs, Accessories, Windows Explorer. Right-click the file you want to encrypt, then choose Properties. Under the General tab, choose Advanced, then select ‘Encrypt contents to secure data’. To decrypt, untick the box.
12. A laptop thief with a bit of technical know-how can easily access files you’ve deleted. DeleteOnClick (tinyurl.com/ystxrx) is a free utility that allows you to securely delete files by right-clicking from the Windows menu. It will also wipe free disk space.