UPDATE: Cloudfogger is no longer available. You can try out Boxcrypter, a very similar service.
Users who have been following IntoWindows or any other technology website probably aware of the recent launch of Google Drive service and SkyDrive client application. The biggest problem with these cloud-based storage services is data security.
If you are someone who has stored all crucial data in the cloud and worried about privacy and data security, then you should check out Cloudfogger. Cloudfogger is a free application that lets you easily encrypt files in our SkyDrive, Google Drive, and Dropbox.
Cloudfogger encrypts your files using AES (Advanced Encryption Standard). One can also share Cloudfogger-protected files with others. You just need to send the automatically generated ID to the person with whom you wish to share the file.
Once you install Cloudfogger application on your Windows machine, it will create a new drive in Windows Explorer, usually, drive X (if that drive letter is available). This new drive is virtual Cloudfogger drive and all files stored in this drive will automatically be stored as encrypted files on your physical hard drive.
Installing and using this application is fairly simple. On the first run, you will be asked to create an account with Cloudfogger. Once done, you can use the software to secure your files. A right-click on any file with give you Fogg (Encrypt), Fogg and Share, Fogg to Copy, Shred and Delete, and Lock Account options.
To encrypt a file, right-click on it and click Fogg (Encrypt). All encrypted files (on any drive) can be seen on the virtual Cloudfogger drive (drive X:). You can directly open the file in the Cloudfogger virtual drive and edit it using your favorite application.
Download Cloudfogger and encrypt all crucial files in your SkyDrive, Dropbox or Google Drive account to secure them.
Please visit this page to know more about the software and how it works. Cloudfogger app is currently available only for Windows and Android operating systems.