Basic VoIP security threat tutorial, ARP poisoning

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A very basic tutorial from techcentric.org on how to STOP VoIP security threats , CAIN, ARP and MITM attacks. Explains that anĀ ARP Poisoning attack is a man in the middle attack (intercepting data in this case VoIP packets).
They recommend that you use SKYPE instead of SIP to avoid man in the middle attacks; [...]

VoIP Security Threats - Video, Peter Cox

Peter Cox(?) a security consultant specializing in VoIP security has a great Podcast primer on VoIP security examples. He states that there are really three categories of VoIP Security Threats:

IP level Threats - shared with the web and email and others, common knowledge to many people already
Protocol and application specific threats, based on the way [...]