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Telephony / Privacy of telecommunications / Surveillance / Broadcast engineering / Dual-tone multi-frequency signaling / Telephone tapping / Blue box / Communications Assistance for Law Enforcement Act / In-band signaling / Multi-frequency signaling / Signaling / Telephone exchange


Signaling vulnerabilities in wiretapping systems∗ Micah Sherr†, Eric Cronin, Sandy Clark‡, and Matt Blaze University of Pennsylvania Contact: Matt Blaze, 8 November 2005
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Document Date: 2006-03-03 16:49:33

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