This does nothing but mark a file with the Finder’s Invisible flag, and can be defeated in seconds. Want to quickly find all the invisible files in your home folder that this app purports to hide? Type this into Terminal: find /Users -flags +hidden Want to make a file visible without the “secure” password? Try this one in the terminal: chflags nohidden /Users/you/Desktop/InvisibleFolder Well then, that was fun.