Re: [Shutup] [ietf-smtp] Proposed Charter for the "SMTP Headers Unhealthy To User Privacy" WG (fwd)
Ted Lemon <mellon@fugue.com> Fri, 04 December 2015 21:10 UTC
Return-Path: <mellon@fugue.com>
X-Original-To: shutup@ietfa.amsl.com
Delivered-To: shutup@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3A8EA1A9028; Fri, 4 Dec 2015 13:10:21 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.912
X-Spam-Level:
X-Spam-Status: No, score=-1.912 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4s_m8EH_iITc; Fri, 4 Dec 2015 13:10:19 -0800 (PST)
Received: from fugue.com (mail-2.fugue.com [IPv6:2a01:7e01::f03c:91ff:fee4:ad68]) by ietfa.amsl.com (Postfix) with ESMTP id B2B6C1A9026; Fri, 4 Dec 2015 13:10:18 -0800 (PST)
Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="----sinikael-?=_1-14492634150080.4767314870841801"
From: Ted Lemon <mellon@fugue.com>
To: shutup@ietf.org
In-Reply-To: <20151204204229.GA7666@gsp.org>
References: <11d014e5-9a6a-4b78-92a1-8e0a1e0a905d@gulbrandsen.priv.no> <lGTaHvC8ygXWFAuu@highwayman.com> <57B818513A0069189BA3CF41@JcK-HP8200.jck.com> <1449014394167-7d2dec58-2c6a9ae8-33fc8e7a@fugue.com> <565E4CCF.3080901@mustelids.ca> <20151202032522.GB12713@gsp.org> <1449027304809-2b32a944-6d383650-49f2a64c@fugue.com> <20151202225124.GA18695@gsp.org> <p06240403d286acd52687@[192.168.1.241]> <1449197323648-4e74dacc-8bacef9a-217d6196@fugue.com> <20151204204229.GA7666@gsp.org>
Date: Fri, 04 Dec 2015 21:10:15 +0000
Message-Id: <1449263415342-dfee86d0-8c0f66a7-860d568b@fugue.com>
MIME-Version: 1.0
Archived-At: <http://mailarchive.ietf.org/arch/msg/shutup/lLNZj7N2zy33_xpdiSS_oGCIcIQ>
Cc: ietf-smtp@ietf.org
Subject: Re: [Shutup] [ietf-smtp] Proposed Charter for the "SMTP Headers Unhealthy To User Privacy" WG (fwd)
X-BeenThere: shutup@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: SMTP Headers Unhealthy To User Privacy <shutup.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/shutup>, <mailto:shutup-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/shutup/>
List-Post: <mailto:shutup@ietf.org>
List-Help: <mailto:shutup-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/shutup>, <mailto:shutup-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 04 Dec 2015 21:10:21 -0000
Friday, Dec 4, 2015 3:42 PM Rich Kulawiec wrote: > 1. Such links are often customized on a per-user per-message basis > with unique URLs. Thus *any* hit on that URL from anywhere must > have come from that user [1] and via that particular message. > It may not disclose their IP address but it *does* disclose that > they read the message and when. This is bad. Yup. You have to always fetch, when the mail arrives. Which could turn into a DDoS attack if you do it for all messages, so not ideal without additional heuristics. But I don't see any way around those heuristics without simply deleting all URLs from all email messages. > 2. Proxying means proxy means proxy log means yet another place where > sensitive information accumulates. I.e., I don't think it's a good idea > to attempt to fix this issue by MITM'ing connections. You already have the whole email message if it's not encrypted, so I don't see that any additional information is leaking here. But this is still a good point. > 3. How do you rewrite a link over an encrypted connection? If you are running the IMAP server, it doesn't matter whether the connection between the user and the server is encrypted. If you are not, then it's not your problem. > I'm not arguing that there isn't a massive privacy problem here. > There is, and I think it's far more worrisome than IP addresses > in Received lines, because it discloses far more information *and it > does so in real time*. I just don't think solving it will be this easy. Agreed on both counts. -- Sent from Whiteout Mail - https://whiteout.io My PGP key: https://keys.whiteout.io/mellon@fugue.com
- Re: [Shutup] Proposed Charter for something Ted Lemon
- [Shutup] Proposed Charter for the "SMTP Headers U… Alexey Melnikov
- Re: [Shutup] Proposed Charter for the "SMTP Heade… John R Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Alexey Melnikov
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Jim Fenton
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Rolf E. Sonneveld
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Newman
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Steve Atkins
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Richard Clayton
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] chained authorizationm, was Proposed… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] chained authorizationm, was Proposed… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Al Iverson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Steve Atkins
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Randall Gellens
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ned Freed
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Tony Finch
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Kurt Andersen (b)
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Hector Santos
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… John Levine
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Stephen Farrell
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Simon Josefsson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… John Levine
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Richard Clayton
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Steve Atkins
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Al Iverson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Kurt Andersen
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Robert A. Rosenberg
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Al Iverson
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Derek J. Balling
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… MH Michael Hammer (5304)
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] real life privacy tradeo… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Robert A. Rosenberg
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Robert A. Rosenberg
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Dave Crocker
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Chris Lewis
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Ted Lemon
- Re: [Shutup] [ietf-smtp] Proposed Charter for the… Hector Santos
- [Shutup] Proposed Charter for the "SMTP Headers U… SM
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Ned Freed
- Re: [Shutup] Proposed Charter for the "SMTP Heade… SM
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Christian Huitema
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for the "SMTP Heade… SM
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Martijn Grooten
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Chris Lewis
- Re: [Shutup] Proposed Charter for something John Levine
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Robert A. Rosenberg
- Re: [Shutup] Proposed Charter for something Dave Crocker
- Re: [Shutup] Proposed Charter for something Martijn Grooten
- Re: [Shutup] [ietf-smtp] Proposed Charter for som… John C Klensin
- Re: [Shutup] Proposed Charter for something Stephen Farrell
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Ned Freed
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Stephen Farrell
- Re: [Shutup] Proposed Charter for the "SMTP Heade… Christian Huitema
- Re: [Shutup] [ietf-smtp] Proposed Charter for som… Chris Lewis
- Re: [Shutup] Proposed Charter for something Hector Santos