In various embodiments, a vehicle processing device may receive a vehicle-to-everything (V2X) message from an ITS participant, the message including an ITS participant type indication, determine detector settings based on the ITS participant type for one or more detectors configured to evaluate an aspect of the ITS participant, determine whether information in the V2X message is plausible using the detector settings based on the ITS participant type for the one or more detectors, and perform a security action in response to determining that the information in the V2X message is not plausible.