A SIP-oriented SPIT Management Framework

Voice over IP (VoIP) telephony is increasingly gaining popularity among home and business users alike, as a viable alternative to traditional telephony, and is expected to achieve a significant market share in the near future. When this happens, it is also expected that several new threats exploiting the Internet vulnerabilities will appear. One of these is the Spam over Internet Telephony (SPIT). This paper examines in detail the SPIT attack, provides a review and assessment of previously proposed SPIT management techniques and proposes the use of an attack-oriented methodology for thwarting the SPIT threat. This results in a generic SPIT management framework, which combines the strengths of existing solutions, while alleviating their insufficiencies.