I used to have a recurring issue where my PlayStation 4 controller, while I had it attached to a PC via USB, would, for some strange region, connect to the PS4 over Bluetooth and start sending button inputs to both the PC and the PS4 simultaneously. Usually this happened while I had the monitor set to the PC (because I was gaming on it), so I wouldn't know I was effectively sending random inputs to the PS4. Sometimes I'd find out when the controller started producing a PS4 game's rumble or controller-speaker audio.<p>In this way, I once spent over $200 on Call of Duty in-game currency. At least, the currency appeared in my account one day, and I'm pretty sure that's how it got there.