If I had a device stolen or lost and somebody found it would they be able to access my information? I recently had cross application fraud and I believe it was related to my iCloud account. I’ve had a device that was stolen as well as another lost

about five months ago I had an old iPhone 8 that I wasn’t using end it was stolen by some workers at my house. Since it did not have my Sim card and had not been powered on for sometime, it did not show in the list I have find my iPhone as one of my products. I did not realize it had been stolen for several weeks, if somebody conducted fraud using a remote desktop app would you be able to tell versus using a separate device? In other words is it connected to the location or the device, all of the information on where the call or fraud originated from?