A method, system and device for deterring spam on a communication medium are disclosed. The method includes detecting a call with a device for accessing the communication medium, wherein calls thereon include Internet Protocol traffic. The device includes an interface for allowing a user of to flag the call as a spam call (e.g., SPIT, SPIM, etc). Upon the flag, a signaling message associated with the call is accessed. The signaling message is stored as information relating to spam call sources. Upon detecting a subsequent call, a signaling message associated with the subsequent call is compared with the information relating to spam call sources. Upon a match between the signaling message associated with the subsequent call and the information relating to spam call sources, the subsequent call is blocked.