These are the presentation slides from "VoIP Wars: Return of the SIP" as presented at Defcon 21 in Las Vegas.
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Whitepaper called Enumerating and Breaking VoIP. It discusses various enumeration techniques followed by a demonstration of a few VoIP attacks.
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Whitepaper called Cisco VoIP Phone - A Hackers Perspective.
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Whitepaper discussing methodologies and logistics to targeting Voice Over IP (VoIP) networks.
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Call Jacking: Phreaking The BT Home Hub.
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Whitepaper detailing step by step instructions on how to connect Vonage to an Asterisk PBX.
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A whitepaper discussing a layered approach to VOIP security.
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