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Old 11-08-2013, 02:31 AM   #1
nerdofdarkness
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cookies in Firefox - can Google read Yahoo! cookies?


Suppose I have a Gmail account, and a Yahoo! mail account.

Both are controlled by cookies in my Firefox.

Can Google see the cookies on my system that apply to Yahoo!

If so, how much information can Google get about my Yahoo! account?

Thanks
 
Old 11-09-2013, 08:42 AM   #2
bigrigdriver
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I found this explanation at www.whatarecookies.com:
Quote:
Who Can Access Cookies?

When a cookie is created it is possible to control its visibility by setting its 'root domain'. It will then be accessible to any URL belonging to that root. For example the root could be set to "whatarecookies.com" and the cookie would then be available to sites in "www.whatarecookies.com" or "xyz.whatarecookies.com" or "whatarecookies.com". This might be used to allow related pages to 'communicate' with each other. It is not possible to set the root domain to 'top level' domains such as '.com' or '.co.uk' since this would allow widespread access to the cookie.

By default cookies are visible to all paths in their domains, but at the time of creation they can be retricted to a given subpath - for example "www.whatarecookies.com/images".
I can't vouch for the valitidy of the explanation, but it does give a "warm and fuzzy" feeling about cookies.
 
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Old 11-10-2013, 07:38 AM   #3
J.A.X
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Basically Firefox won't allow that, since every single cookie has a label to a specific domain name, called domain.
This is a basic security measure, or else anyone can create a website and steal your cookie name, which is called Session Hijacking.

Session Hijacking.
Session Management.
 
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Old 11-10-2013, 07:56 AM   #4
JJJCR
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Cool

Quote:
Originally Posted by nerdofdarkness View Post
Suppose I have a Gmail account, and a Yahoo! mail account.

Both are controlled by cookies in my Firefox.

Can Google see the cookies on my system that apply to Yahoo!

If so, how much information can Google get about my Yahoo! account?

Thanks
Ask Snowden, just kidding LOL.
 
Old 11-10-2013, 07:47 PM   #5
nerdofdarkness
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Quote:
Originally Posted by bigrigdriver View Post
I found this explanation at www.whatarecookies.com:

I can't vouch for the valitidy of the explanation, but it does give a "warm and fuzzy" feeling about cookies.
That is a very good short description of cookies. It gives me a starting point.
 
Old 11-10-2013, 07:49 PM   #6
nerdofdarkness
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Quote:
Originally Posted by J.A.X View Post
Basically Firefox won't allow that, since every single cookie has a label to a specific domain name, called domain.
This is a basic security measure, or else anyone can create a website and steal your cookie name, which is called Session Hijacking.

Session Hijacking.
Session Management.
Wow. That is an awesome information security site. I took a quick look at that and barely scratched the surface. I will definitely bookmark that and peruse it with great care, but I think it's going to take more than a few hours to really get into that. The details of web sessions are something I'm going to have to know eventually, but they are clearly very complicated. Thanks for the resource.
 
Old 11-10-2013, 11:51 PM   #7
John VV
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but the advertising WILL install "tracking cookies "
and they WILL send a list of all installed cookies to the site and any "affiliates" of theirs

in a utopian world cookies would not be a bad thing

But we DO NOT LIVE IN ONE .......

there is a reason i run
Ghostery
No-Script
Ad Block Plus
and disable some "java-script" in firefox
 
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Old 11-11-2013, 12:52 AM   #8
nerdofdarkness
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Quote:
Originally Posted by John VV View Post
but the advertising WILL install "tracking cookies "
and they WILL send a list of all installed cookies to the site and any "affiliates" of theirs

in a utopian world cookies would not be a bad thing

But we DO NOT LIVE IN ONE .......

there is a reason i run
Ghostery
No-Script
Ad Block Plus
and disable some "java-script" in firefox
Yeah, that's the kind of information leakage I had suspected. So even if Google doesn't know my Yahoo email address, they know that I'm on Yahoo often enough to have cookies there.

As for Ghostery, Ad Block Plus, and deactivated Javascript - I run Firefox with those on an OS X machine, and many websites are not usable.
 
Old 11-11-2013, 12:56 AM   #9
John VV
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ghostery and no script NEED TO BE set up and configured

ghostery will take a day or two
no-script a few weeks

then you have the "forever cookies" AKA the Flash cookies
these firefox WILL NOT and can NOT delete

link ~./micromedia/#sharedobjects to /dev/null

Last edited by John VV; 11-11-2013 at 12:58 AM.
 
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Old 11-11-2013, 01:04 AM   #10
nerdofdarkness
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Quote:
Originally Posted by John VV View Post
then you have the "forever cookies" AKA the Flash cookies
these firefox WILL NOT and can NOT delete

link ~./micromedia/#sharedobjects to /dev/null
I had been using BetterPrivacy as a Firefox add-on to deal with Flash privacy issues.
 
  


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