If you lose your computer or your external storage device (e.g. USB drive or USB thumb drive), any personal data stored on those devices is an open book to anyone who finds them. You cannot guarantee that you will never lose or misplace your computer, external USB drive, or thumb drive, but you can certainly guarantee that no one else can access your personal data by using encryption technology that is freely available to anyone who has Internet access.
There are many free computer security programs out there for the PC platform. The ones I list here are some of the top solutions in their field and best security for your PC in their class.
- TrueCrypt: a free open-source disk encryption software for Windows (download TrueCrypt)
- PGP Desktop: PGP stands for Pretty Good Privacy. PGP Desktop is a commercial product of PGP Corporation. When the trial version expires, its encryption function continues to be free and available (download PGP Desktop trial)
- BitLocker: If you have the Enterprise or Ultimate versions of Windows Vista or Windows 7, then it comes bundled with BitLocker. Explore the features of BitLocker at Microsoft.com.
You can combine encryption with online storage solutions to remove the chance you'll lose personal data. This way you can save your personal data on encrypted files or volumes and then back it up online. If you ever lose your laptop, your personal data is secure (because it is encrypted), and you can recover it from the online backup service. There are free ones out there; here are some:
- iDrive: provides initial 2GB of free storage space
- ADrive: ADrive basic plan provides 50GB of free storage space (make sure to encrypt before uploading)