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Even without JavaScript or cookies, HTTP request headers can reveal a lot of unique entropy: * Browser * Browser version * OS * OS version * Machine
by cpeterso 9y ago
Even without JavaScript or cookies, HTTP request headers can reveal a lot of unique entropy:
* Browser
* Browser version
* OS
* OS version
* Machine architecture such as x86, x86-64, or ARM
* User locale
* IP address
* DNT flag
Trackers can also tag clients with unique cookie-like ETag or Cache-Control values that clients will return in future HTTP requests.