Instagram is taking action against a stalker-friendly app that makes Like Patrol seem modest. The social network confirmed to Android Police that it was sending a cease and desist request to Ghosty, an Android app built to show you private Instagram profiles without permission. That would be enough of a violation by itself, but the way Ghosty exposes those profiles makes things worse. It pushes you to recruit others before you can see private accounts, and it simply harvests users' data to find the private profiles they follow. You're giving up some of your own privacy (and that of your friends) to intrude on others.