From Software Technology:
Folder Security can lock, hide any number of files, folders, pictures and documents in seconds by a simple drag and drop. It is fast, reliable, portable and convenient. Protected files and folders are undeletable, unmovable, hidden, locked and totally inaccessible. It locks all your files on kernel level, Windows Explorer and even real DOS Mode, protects files from theft, privacy breaches and data losses, hides files from kids, friends and co-workers, safeguards them from viruses, trojans, worms and spyware, secures from network computers, cable users and hackers when you are on the Internet, even prevents illegal copy or deletion of your material.