From the perspective of those who hold a stake in voice over IP, however, “social irritations” such as spam are the least of their worries. According to the VOIP Security Alliance, the greatest threat to VOIP comes in the form of deceptive or fraudulent behaviors, such as unlawful monitoring of calls, DoS (denial-of-service) attacks, false caller ID and eavesdropping. VOIPSA is unveiling a Taxonomy Threat Model as its preferred framework for addressing privacy and security policies surrounding VOIP deployment.