October 25, 2005
VoIPSA
The Voice over IP Security Alliance (VoIPSA) has released a classification of the threats that IP telephony is vulnerable to. The VoIP Security Threat Taxonomy is intended to serve as a single reference point for looking up the type and description of threats; thereby facilitating a systematic approach to tackling these threats. The taxonomy has resulted in a clearer understanding of the gravity of the threats; voice spam was considered to be a major threat but according to the taxonomy deceptive practices pose a bigger challenge.
The threats have been classified into four categories that include DoS; unlawful signal or traffic modification; signal interception; and bypass of refused consent. The first two types of threat categories are concerned with the integrity of the network signal. The latter two types of threats are specific to VoIP and concerned particularly with maintaining privacy.
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