Secure Telephone Identity Threat Model

Document Type Replaced Internet-Draft (individual)
Last updated 2014-03-08 (latest revision 2013-09-04)
Replaced by RFC 7375
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Intended RFC status (None)
Expired & archived
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IESG IESG state Replaced by draft-ietf-stir-threats
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


As the Internet and the telephone network have become increasingly interconnected and interdependent, attackers can impersonate or obscure calling party numbers when orchestrating bulk commercial calling schemes, hacking voicemail boxes or even circumventing multi- factor authentication systems trusted by banks. This document analyzes threats in the resulting system, enumerating actors, reviewing the powers available to and used by attackers, and describing scenarios in which those powers are exercised.


Jon Peterson (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)