If you worry some one may accidentally access your personal or sensitive data, or maybe got deleted by accident, then you should keep them safe with the help of a folder protection tool.
Here is a list of free folder protection tools:
1. Kakasoft Folder Protector
http://www.kakasoft.com/folder-protect/
2. Free Hide Folder
http://www.cleanersoft.com/hidefolder/free_hide_folder.htm
3. Folder Latch
http://www.folderlatch.com/
4. Microsoft Private Folder
http://www.softpedia.com/get/Security/Lockdown/Microsoft-Private-Folder.shtml
5.Wise Folder Hider
http://wisecleaner.com/wisefolderhider.html
6. True Crypt
http://www.truecrypt.org/
