A simple way to lock down access to certain files is to create an encrypted archive. Odds are you already have installed a copy of 7-Zip, WinRAR, or The Unarchiver (Mac) or some equivalent. Create a new archive, select to encrypt its contents and password protect them.
❖ Choose the File/Folder which has to be protected
❖ Create a new archive and select to encrypt its contents (i.e.,) right-click the file and select “Add to archive”
❖ Next provide an Archive name
❖ Now, go to Advanced tab and choose “Set password”
❖ Here you have to Enter and Re-enter the password for protection
❖ Now you can close the dialog box to complete the password protection