Presence Based Secure Instant Messaging Mechanism for IP Multimedia Subsystem

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Presence and instant messaging are the two important services offered on top of IP Multimedia subsystem. Instant messages can be session based or immediate. In both cases there are some security threats like session modification, session termination, invite flooding and message flooding, etc. In this paper, a presence based solution to mitigate the effect of these attacks is proposed. Results show that the proposed solution performs well to secure the instant messaging.