1. A method of detecting if a processing system has been compromised with audio/visual threat, wherein the method comprises: identifying a requesting entity and a target entity, wherein the requesting entity originates one or more requests to perform an activity in relation to the target entity, and wherein the target entity comprises an audio and/or visual communication device of the processing system; intercepting the one or more requests to perform the activity associated with the audio and/or visual communication device of the processing system; recording the intercepted one or more requests and properties associated with the requesting entity and the target entity in an intercepted request log file; and performing a behavioural analysis of a trend in the processing system using the intercepted request log file to determine if the processing system exhibits behavioural characteristics indicative of the processing system having been compromised with an audio/visual threat.