Privacy and Security Threat Analysis for Private Messaging

Document Type Expired Internet-Draft (individual)
Authors Iraklis Symeonidis  , Bernie Hoeneisen 
Last updated 2020-05-03 (latest revision 2019-10-31)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Modern email and instant messaging applications offer private communications between users. As IM and Email network designs become more similar, both share common concerns about security and privacy of the information exchanged. However, the solutions available to mitigate these threats and to comply with the requirements may differ. The two communication methods are, in fact, built on differing assumptions and technologies. Assuming a scenario of untrusted servers, we analyze threats against message delivery and storage, the requirements that these systems need, and the solutions that exist in order to help implement secure and private messaging. From the discussed technological challenges and requirements, we aim to derive an open standard for private messaging.


Iraklis Symeonidis (
Bernie Hoeneisen (

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