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Re: Google Search and Gmail Correlation
From: "Ádám Szilveszter dr." <adam () nhh hu>
Date: Thu, 24 Feb 2005 13:12:24 +0100

Hello Cody,

I think that what you are observing is this: the cookie you get when 
visiting your gmail account is valid for the whole google.com domain, and 
therefore will be transferred again when you do web searches as well.

As you write, this is not a bug per se, the cookie mechanism is working as 

It is also obvious that such an approach may raise privacy concerns.

Now, *if* google wanted to mitigate this problem, it would be easy. They 
should migrate the gmail service web frontend to a subdomain (say: 
gmail.google.com) or even a whole new domain (gmail.com exists already but 
www.gmail.com merely redirects) and make the cookie only valid in that 

The questions is, do they want to do this?

And yes, for now, if you are privacy conscious, delete the cookie before 
doing a Google search (or using any other Google service).


Szilveszter Adam
Full-Disclosure - We believe in it.
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