[tor-qa] TBB 3.5rc1 try #5

[Mark Smith]

On 12/12/13 12:23 PM, Sherief Alaa wrote:
> On Thu, Dec 12, 2013 at 7:07 PM, Tom Ritter <tom at ritter.vg
> <mailto:tom at ritter.vg>> wrote:
> ...
>     Then a .onion gave me the same canvas popup, which seemed weird.
>     Screenshot: http://imgur.com/SYtmONO
>
>
> I do get the same popup too but I never allow it. Sorry for not
> reporting this.

It looks like https://duckduckgo.com/ and http://3g2upl4pq6kufc4m.onion 
both use JS code that calls canvas.getContext("2d").getImageData(). 
Search for getImageData in https://duckduckgo.com/d1050.js.  I guess 
someone is trying to determine if font smoothing is being used by the 
browser; I can't say why.

But that is what is triggering the prompt.

-- 
Mark Smith
Pearl Crescent, LLC
http://pearlcrescent.com/