Return-Path: X-Original-To: notmuch@notmuchmail.org Delivered-To: notmuch@notmuchmail.org Received: from localhost (localhost [127.0.0.1]) by arlo.cworth.org (Postfix) with ESMTP id C42046DE01C2 for ; Tue, 9 Aug 2016 08:30:54 -0700 (PDT) X-Virus-Scanned: Debian amavisd-new at cworth.org X-Spam-Flag: NO X-Spam-Score: -0.052 X-Spam-Level: X-Spam-Status: No, score=-0.052 tagged_above=-999 required=5 tests=[AWL=-0.052] autolearn=disabled Received: from arlo.cworth.org ([127.0.0.1]) by localhost (arlo.cworth.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SBtDXSUWiweh for ; Tue, 9 Aug 2016 08:30:47 -0700 (PDT) Received: from che.mayfirst.org (che.mayfirst.org [162.247.75.118]) by arlo.cworth.org (Postfix) with ESMTP id DE7E06DE015B for ; Tue, 9 Aug 2016 08:30:46 -0700 (PDT) Received: from fifthhorseman.net (unknown [38.109.115.130]) by che.mayfirst.org (Postfix) with ESMTPSA id D202DF98B; Tue, 9 Aug 2016 11:30:45 -0400 (EDT) Received: by fifthhorseman.net (Postfix, from userid 1000) id 38BA820220; Tue, 9 Aug 2016 11:28:50 -0400 (EDT) From: Daniel Kahn Gillmor To: Gaute Hope , Notmuch Mail Subject: Re: [PATCH v2] Omit User-Agent: header by default In-Reply-To: <1470722437.astroid.gs96qso15j@strange> References: <874m6uvpe0.fsf@maritornes.cs.unb.ca> <1470699317-30598-1-git-send-email-dkg@fifthhorseman.net> <1470722437.astroid.gs96qso15j@strange> User-Agent: Notmuch/0.22.1+88~g8d09e96 (https://notmuchmail.org) Emacs/24.5.1 (x86_64-pc-linux-gnu) Date: Tue, 09 Aug 2016 11:28:44 -0400 Message-ID: <8760ravu4z.fsf@alice.fifthhorseman.net> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" X-BeenThere: notmuch@notmuchmail.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Use and development of the notmuch mail system." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Aug 2016 15:30:54 -0000 --=-=-= Content-Type: text/plain On Tue 2016-08-09 02:02:49 -0400, Gaute Hope wrote: > Daniel Kahn Gillmor writes on august 9, 2016 1:35: >> The User-Agent: header can be fun and interesting, but it also leaks >> quite a bit of information about the user and their software stack. > > Is the message-id generated by gnus or notmuch-emacs? I could not find > the relevant code. I noticed it has an *.fsf@* part as well as the, > probably customizable, local FQDN. agreed, this is another metadata leak that we should fix, but i don't think it needs to be conflated with this one. does anyone know of a useful standard for message-id generation that would put gnus/notmuch-emacs/mml users into a larger anonymity set? --dkg --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQJ8BAEBCgBmBQJXqfatXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRFREIyRTc0RjU2RkNGMkI2NzI5N0I3MzUy NEVDRkY1QUZGNjgzNzBBAAoJECTs/1r/aDcKWn8P/iM+qezlU2BXfqK8SLwPWBn+ 9jgFAFspoatcss3be+lUNJO2Lk4mmVlHR5VWwYtQj1VvIehviocORJjfnLi0es1N D5d1A1XwED9KdzEcGZIYMiCU4PThSA6vGdErZj7MYVinlZu3JTN+vCy+eAE6T4kZ v/yTeItr5RxNV+D+Yr+1H4x599YMG6ZeWwVsR5SorHGi13FxcjyUbJa0xOOLlj8w H5JW/pfJwOMOCUHqZc6r/QfB6POU39nkjQf5xGM2InmnE11193uNJR1khkisyQYB VznE7B11HCFW/AnFCfURtd7C4+6LPU5rMtRRjxCntCfuI/Hrh7DxmGlVbrDaFmK2 wZOxa3h2AWEQ22nGvrYfsqiyWzpnAGOe7zFqhM93Tkq+U8AAcRBj0J8nW8V/03jN EJ7FPABddrzW6jRJIqSjLctgZjM6bClwFfTwN1KJNPAEvEEhSEFmR8KhdO4yhE2L BIp5tL8E12DtQ9Tp2bEChCz7KDXe1coHSgS+NGoKGsWmV6YYTv5/i8qHe6h3akkL cJ3iccyRRa4kLCj7resvsoa66RzNlyFJxtqvgECCh3MjiM/dWNJMO7hz/vU11siB 8w6x740Zkzj+rhVwscrsljByrfOuLbewGv+/NtSmBZYd5TmVFB2EsK9VSQcBkvM5 BMqAC+qtkKQ3J65+uBsG =bt7Q -----END PGP SIGNATURE----- --=-=-=--