A system for identifying trusted machines for Machine-to-Machine (M2M) validation receives a query message from a first trusted computing device, requesting whether an unrecognized computing device is in a list of trusted devices associated with a second trusted computing device. The system determines whether the unrecognized computing device is in the list of trusted devices by determining whether an identification associated with the unrecognized computing device is among the list of trusted devices. In response to determining that the unrecognized computing device is in the list of trusted devices, the system sends a response message to the first trusted computing device, indicating that the unrecognized computing device is in the list of trusted devices.