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Re: [tor-talk] Importance of individual useragent items

On 06/23/2014 12:11 PM, Joe Btfsplk wrote:
> I noticed there are at least 2 different references in Torbrowser for
> useragent over ride strings.
> The Panopticlick site picks up this one: "/Mozilla/5.0 (Windows NT 6.1;
> rv:24.0) Gecko/20100101 Firefox/24.0/," though there's another shown in
> about:config: extensions.torbutton.useragent_override;Mozilla/5.0
> (Windows NT 6.1; rv:17.0) Gecko/20100101 Firefox/17.0.
> Aside from the fact there are 2 strings shown in about:config, the
> string that Panopticlick detects shows Windows 7 (32 bit - I assume).
> Several Windows usage by version sites show Win 7 64 bit as much more
> common.  If true, why doesn't Torbrowser use that in its useragent?
> The string in Torbrowser may be one of the most common setups? Some
> "useragent info" sites show 64 bit OSes are more common in the string.  
> In my 1st visit to Panopticlick in a long time, using Torbrowser - it
> showed
> Browser Characteristic:  User Agent
> bits of identifying information:  6.73
> one in x browsers have this value:  105.86
> value: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Firefox/24.0
> For the useragent string alone, 1 in 106 is pretty low.

To my knowledge TorBrowser doesn't try to hide the fact that it's
TorBrowser.  As long as all TorBrowsers are the same (which I assume is
the case), then it shouldn't affect the anonymity set unless I'm mistaken.

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