It's important to do your homework on any money-making app before using it, & you should be cautious of any that ask for payment up front or sensitive personsatta king on lineal information. Security and Privacy Issues. The possibility of less security and privacy when using some money-making apps is another risk. Without the users' knowledge or consent, some apps may gather and sell user data, jeopardizing their privacy & resulting in unsolicited requests or targeted advertisements.