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+ Tue, 27 Jan 2015 20:44:12 -0800 (PST)\r
+From: Jinwoo Lee <jinwoo68@gmail.com>\r
+To: Daniel Kahn Gillmor <dkg@fifthhorseman.net>,\r
+ David Bremner <david@tethera.net>,\r
+ notmuch mailing list <notmuch@notmuchmail.org>\r
+Subject: Re: privacy problem: text/html parts pull in network resources\r
+In-Reply-To: <871tmfin1k.fsf@alice.fifthhorseman.net>\r
+References: <87ppa7q25w.fsf@alice.fifthhorseman.net>\r
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+Date: Tue, 27 Jan 2015 20:44:10 -0800\r
+Message-ID: <yq65h9vbtsyt.fsf@jinwoo-macbookair.roam.corp.google.com>\r
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+\r
+On Tue, Jan 27, 2015 at 07:47 PM, Daniel Kahn Gillmor <dkg@fifthhorseman.net> wrote:\r
+> On Sun 2015-01-25 12:51:43 -0500, David Bremner wrote:\r
+>> Daniel Kahn Gillmor <dkg@fifthhorseman.net> writes:\r
+>>\r
+>>> If i send a message with a text/html part (either it's only text/html,\r
+>>> or all parts are rendered, or it's multipart/alternative with only a\r
+>>> text/html subpart) and that HTML has <img\r
+>>> src="http://example.org/test.png"/> in it, then notmuch will make a\r
+>>> network request for that image.\r
+>>>\r
+>>> This is a privacy disaster, because it enables an e-mail sender to use\r
+>>> "web bugs" to tell when a given notmuch user has opened their e-mail.\r
+>>\r
+>> I've just pushed Austin's shr related series to master, so this problem\r
+>> should be fixed as of commit b74ed1c. One tradeoff that we should at\r
+>> least remark in NEWS, if not actually fix, is that I think there is now\r
+>> no way to view such images in notmuch. I don't know offhand what other\r
+>> html renderers will do.\r
+>\r
+> thanks for this, David and Austin!\r
+>\r
+> Other html-rendering mail clients that are privacy-conscious will often\r
+> provide a button or mechanism to indicate that some remote resources\r
+> were requested by the page but weren't fetched (e.g. a button saying\r
+> something like [Load Remote Images...]). I have no idea who actually\r
+> clicks on those buttons (or why), though, and even if we wanted them,\r
+> we'd only want to add a button on an image that actually had remote\r
+> network resources to load, and i don't know how we'd get that\r
+> information propagated back up the rendering stack to make such a\r
+> display decision. So i'm fine with leaving it this way for now.\r
+\r
+Well, most promotional emails contain remote images and their contents\r
+are incomprehensible without those images. I ignore most of them but I\r
+do read a few of those promotional emails. It would be great to have a\r
+UI for loading remote resources.\r
+\r
+>\r
+> --dkg\r
+> _______________________________________________\r
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projects / notmuch-archives.git / commitdiff