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by cbr
5079 days ago
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An identifier has privacy disadvantages over a cookie with the same duration. The least privacy you have is when the server has a unique identifier for you: then they can do whatever they want. With a cookie the site has an option to store only what they need, instead of something unique. For example if I'm running an a/b test I could do this with a cookie, setting it to "1" for half the users and "2" for the other half. (I work on mod_pagespeed, and our experimental framework uses cookies this way: https://developers.google.com/speed/docs/mod_pagespeed/modul...) |
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