SPIM (Spam over Internet Messaging) poses a threat to VoIP systems by consuming bandwidth, diverting resources, and potentially causing denial of service attacks. The influx of SPIM messages can degrade the quality of VoIP calls, overload servers, and serve as a platform for social engineering attacks, jeopardizing the security of VoIP users. To mitigate these risks, organizations should implement spam filters, intrusion detection systems, and regular software updates while also educating users to recognize and avoid potential threats associated with SPIM.