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Phreaks Threaten Voice IP Security
Mr Barrie, a lecturer in security at the University of Sydney and former manager of the Packetstorm security portal, said telephone network operators had spent years coming to terms with security issues in voice transmission, which could re-emerge as VoIP grew.
Internet security centre CERT found a vulnerability in the fledgling IP Session Initiation Protocol (SIP) in February. Among other things, the vulnerability could be used to cause denial of service attacks.
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