University of Pennsylvania ScholarlyCommons Departmental Papers (CIS) Department of Computer & Information Science November 2005 Signaling Vulnerabilities in Wiretapping Systems Micah Sherr University of Pennsylvania Eric Cronin University of Pennsylvania Sandy Clark University of Pennsylvania Matthew A. Blaze University of Pennsylvania,
[email protected] Follow this and additional works at: https://repository.upenn.edu/cis_papers Recommended Citation Micah Sherr, Eric Cronin, Sandy Clark, and Matthew A. Blaze, "Signaling Vulnerabilities in Wiretapping Systems", . November 2005. Copyright 2005 IEEE. Reprinted from IEEE Security & Privacy, Volume 3, Issue 6, November-December 2005, pages 13-25. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to
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[email protected]. Signaling Vulnerabilities in Wiretapping Systems Abstract Many law enforcement wiretap systems are vulnerable to simple, unilateral countermeasures that exploit the unprotected in-band signals passed between the telephone network and the collection system. This article describes the problem as well as some remedies and workarounds. Comments Copyright 2005 IEEE. Reprinted from IEEE Security & Privacy, Volume 3, Issue 6, November-December 2005, pages 13-25.