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IT Security and Insecurity Portal |
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Can a website modify info in third party cookies? |
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 Posted: Wed Apr 16, 2008 3:58 am |
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| Leafgreen |
| Beginner |
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| Joined: Apr 16, 2008 |
| Posts: 1 |
| Location: C:Wonderland |
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Consider this scenario:
A coder ("DevA") has control of two websites: WebsiteA and WebsiteB, but not WebsiteD. WebsiteA and WebsiteB are written in PHP.
When a user ("MemberA") is logged in at WebsiteA, and clicks on an advertisement ("AdD"), then the final destination of MemberA's browser is WebsiteD. Both WebsiteD and AdD's ad tracking service ("TrackingServiceD") will save the referring URL as www.WebsiteA.com/pageclickedon.php in two different cookies ("CookieD") and ("CookieT") on MemberA's computer. The www.WebsiteA.com/pageclickedon.php value may be encrypted in CookieD and CookieT.
  Can DevA write code to cause WebsiteD and TrackingServiceD to save the referring URL in CookieD and CookieT as www.WebsiteB.com/pageclickedon.php instead of www.WebsiteA.com/pageclickedon.php ? 
BTW, all other values in CookieD and Cookie T (besides www.WebsiteB.com/pageclickedon.php) must remain unchanged. |
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