An old scam to separate people from their money has been gaining more popularity. It uses a cellphone protocol called WAP billing to steal your money. You have a hint from its name that it has something to do with wireless network protocols, but the idea is to save folks some time when they want to pay for something online by having the charges go directly on the user’s phone bill. I explain the exploit and how it is being used in my latest blog post for iBoss here. One infection point is a “battery optimizer” app that conceals the WAP billing trojan.