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Re: How does Gmail know my local time zone (therefore ignoring the time zone of the Tor exit node) and what else can it see?

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Subject: Re: How does Gmail know my local time zone (therefore ignoring the time zone of the Tor exit node) and what else can it see?
From: David Carlson <carlson.dl@xxxxxxxxxxxxx>
Date: Mon, 06 Sep 2010 10:11:25 -0500
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 On 9/5/2010 4:11 PM, Geoff Down wrote:


On Sun, 05 Sep 2010 19:55 +0100, "Matthew"<pumpkin@xxxxxxxxx>  wrote:

   Hello,

I have yet another question that relates to the effectiveness of Tor.

Gmail (and therefore presumably other webmail operators) knows my
computer's time zone.  It does not know the time per se but the "time
zone"
as set (in Ubuntu) through clicking on the clock, selecting preferences,
then choosing location.

Obviously this ignores the time (based on the location) of the Tor exit
node.

I do not know how Gmail knows my computer's time zone, and, in which
case,
what other "local" information it can know.

Does anyone know how Gmail can do this and what other information from
the
client computer can be viewed.  In other words, why can Gmail not, in
theory, also view the real local IP?

Thanks.

Did you select a time zone when you set up the account?
I assume you are using Torbutton, which blocks Javascript being used to
read your local clock.
GD

I use Torbutton and I was wondering why Google and Gmail (and Yahoo)think I am living in, say Germany or some other country when I have Torenabled, which I figured out, but when I asked them why they make thoseunwarranted assumptions about my location or time zone from the exitnode address, they were completely silent. So much for that littlerant. Have a good holiday if you live in the US, or a good non-holidayif you don't.


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References:
- How does Gmail know my local time zone (therefore ignoring the time zone of the Tor exit node) and what else can it see?
  - From: Matthew
- Re: How does Gmail know my local time zone (therefore ignoring the time zone of the Tor exit node) and what else can it see?
  - From: Geoff Down

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