If I created an app that functioned in real time on a server such as snapchat how secure would it be? Snapchat is only offered on mobile devices. Would someone be able to go in, and change code in the app from the server side, and send out 1000s of pictures or collect pictures from tons of users? If thats not possible could someone use a jailbroken iphone or android to send out 1000's of pictures. Im just wondering how secure these applications are compared to physical websites where people can find vulnerabilities and exploit them more commonly.