Internet Threat Model Evolution: Background and Principles
draft-arkko-farrell-arch-model-t-redux-00

Document Type Active Internet-Draft (individual)
Authors Jari Arkko  , Stephen Farrell 
Last updated 2020-11-02
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Network Working Group                                           J. Arkko
Internet-Draft                                                  Ericsson
Intended status: Informational                                S. Farrell
Expires: May 7, 2021                              Trinity College Dublin
                                                        November 3, 2020

       Internet Threat Model Evolution: Background and Principles
               draft-arkko-farrell-arch-model-t-redux-00

Abstract

   Communications security has been at the center of many security
   improvements in the Internet.  The goal has been to ensure that
   communications are protected against outside observers and attackers.

   This memo suggests that the existing RFC 3552 threat model, while
   important and still valid, is no longer alone sufficient to cater for
   the pressing security and privacy issues seen on the Internet today.
   For instance, it is often also necessary to protect against endpoints
   that are compromised, malicious, or whose interests simply do not
   align with the interests of users.  While such protection is
   difficult, there are some measures that can be taken and we argue
   that investigation of these issues is warranted.

   It is particularly important to ensure that as we continue to develop
   Internet technology, non-communications security related threats, and
   privacy issues, are properly understood.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 7, 2021.

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Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Attack Landscape  . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Communications Security Improvements  . . . . . . . . . .   5
     2.2.  Beyond Communications Security  . . . . . . . . . . . . .   6
     2.3.  Types of Attacks  . . . . . . . . . . . . . . . . . . . .   7
       2.3.1.  Misuse of Accidental Vulnerabilities  . . . . . . . .   7
       2.3.2.  Misbehaving Applications  . . . . . . . . . . . . . .   8
       2.3.3.  Network Infrastructure Attacks  . . . . . . . . . . .   8
       2.3.4.  Untrustworthy Devices . . . . . . . . . . . . . . . .   9
       2.3.5.  Tracking  . . . . . . . . . . . . . . . . . . . . . .  10
   3.  Principles  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     3.1.  Trusting Devices  . . . . . . . . . . . . . . . . . . . .  13
     3.2.  Protecting Information  . . . . . . . . . . . . . . . . .  13
     3.3.  Tracking  . . . . . . . . . . . . . . . . . . . . . . . .  13
     3.4.  Role of End-to-End  . . . . . . . . . . . . . . . . . . .  14
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   6.  Informative References  . . . . . . . . . . . . . . . . . . .  15
   Appendix A.  Contributors . . . . . . . . . . . . . . . . . . . .  25
   Appendix B.  Acknowledgements . . . . . . . . . . . . . . . . . .  25
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  26

1.  Introduction

   Communications security has been at the center of many security
   improvements in the Internet.  The goal has been to ensure that
   communications are protected against outside observers and attackers.
   At the IETF, this approach has been formalized in BCP 72 [RFC3552],
   which defined the Internet threat model in 2003.

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