WinDefender is a tool that you can use to secure your confidential data and protect your files and folders on computers running Windows. It provides real-time protection and security service with strong encryption. Once you encrypt your private folders then can use them just all others, non-encrypted ones - files will be decrypting 'on the fly'! For any required files and folders you can assign access right, i.e. make it read-only or hide, for example.