: You can run the program in total secrecy, so others don't even know you have protected files.
: You can set different permissions for different users, ensuring your kids or guests don't accidentally delete your work. Smart Alternatives for File Security
: A popular, open-source (and free!) tool that creates encrypted "containers" for your most sensitive files.
: For simple file protection, you can put your folders into a 7-Zip archive and protect them with AES-256 encryption for free.
: If you use Windows Pro, BitLocker is already included and incredibly secure.