[tbb-dev] Exposing TB as Tor Browser

Tom Ritter tom at ritter.vg
Mon Nov 27 06:00:28 UTC 2017


That's a workable solution for this particular issue - but it seems
convoluted advice to give to website authors. An extensible,
semi-standard API is a lot less complicated.  To answer Georg's
question: no there is no bug for this. I'd have to go hunting to see
who I need to get permission from to add something non-standard like
this into the DOM actually...

-tom

On 17 November 2017 at 08:36, Arthur D. Edelstein
<arthuredelstein at gmail.com> wrote:
> On Fri, Nov 3, 2017 at 12:06 PM Tom Ritter <tom at ritter.vg> wrote:
>
>> Wordpress would like to detect Tor Browser so it doesn't perform the
>> check and therefore doesn't pop the prompt. This would significantly
>> reduce the number of prompts Tor Browser users are seeing.
>
>
> I think a possibly good way to avoid the prompt might be a method Tom and
> Mark suggested before: block image extraction without showing the prompt
> unless the extraction attempt happens following a user interaction:
>
> https://bugzilla.mozilla.org/show_bug.cgi?id=1376865
>
> And indeed this would provide scripts a way of silently checking for canvas
> fingerprinting protection. On load, draw on a canvas and attempt to extract:
> if the returned image is blank, the page knows not to do it again after a
> user interaction.
>
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