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Wikipedia has a list of websites known to use this technique already: https://en.wikipedia.org/wiki/HTTP_ETag#Tracking_using_ETags https://en.wikipedia.org/wiki
by dalore 7y ago
Wikipedia has a list of websites known to use this technique already: https://en.wikipedia.org/wiki/HTTP_ETag#Tracking_using_ETags https://en.wikipedia.org/wiki/HTTP_ETag#Tracking_using_ETags
Looks like KISSmetrics are getting sued with a class action lawsuit over using this technique.
- hinkley 7y agoThere are a lot of very cool things that have been in or allowed by the HTTP and HTML specs that have had to go because people can't be trusted to play nice. ETags are one of the biggest disappointments that way. I wonder if there's a potential to fix this by suggesting a deterministic version of ETags, that's based off of information the User Agent can see. Like the Vary information, response headers and payload.