The extent of our supercookie detection is currently limited to localStorage based tracking. However there are many other vectors through which an origin can set a uniquely identifiable token. evercookie is a tool that tries to use as many of these as possible to redundantly store some unique token.
We may be able to detect sites using evercookie using a method similiar to our new fingerprint detection heuristic (#1505). We can monitor the API's which are vectors for supercookie tracking, then when an origin accesses some unusually high number of these API's, we can mark it as tracking.
The extent of our supercookie detection is currently limited to localStorage based tracking. However there are many other vectors through which an origin can set a uniquely identifiable token. evercookie is a tool that tries to use as many of these as possible to redundantly store some unique token.
We may be able to detect sites using evercookie using a method similiar to our new fingerprint detection heuristic (#1505). We can monitor the API's which are vectors for supercookie tracking, then when an origin accesses some unusually high number of these API's, we can mark it as tracking.