They may be hugely popular with developers and universally hated by users, but there is little doubt that the in-app purchase model is here to stay. With no sign of going away just yet, especially in the gaming arena on mobile devices, in-app purchases are often used to give developers a long running revenue stream by getting users to buy in-game currency and other consumables using real money. Unfortunately, a new report claims that the world of in-app purchase is far from secure.