diff --git a/Dynamic filtering: Benefits of blocking 3rd party iframe tags.md b/Dynamic filtering: Benefits of blocking 3rd party iframe tags.md index 8b2f14c..c2fd31c 100644 --- a/Dynamic filtering: Benefits of blocking 3rd party iframe tags.md +++ b/Dynamic filtering: Benefits of blocking 3rd party iframe tags.md @@ -28,6 +28,19 @@ The title is obviously an exaggeration (the tracking _can_ be blocked). The particular `addthis.com` javascript code which attempts to fingerprint your browser executes from within a 3rd-party `iframe`. -Contrary to what Adblock Plus has been claiming on its blog and the [media](http://news.yahoo.com/adblock-plus-stop-canvas-fingerprinting-unstoppable-browser-tracking-191541979.html), using _EasyPrivacy_ does **not** prevent AddThis from fingerprinting your browser. This is something I verified and re-verified back then, and unless appropriate filters have been added since last time I checked, it still is the case. +Contrary to what Adblock Plus has been claiming on its blog and the [media](http://news.yahoo.com/adblock-plus-stop-canvas-fingerprinting-unstoppable-browser-tracking-191541979.html), using _EasyPrivacy_ does **not** prevent AddThis from fingerprinting your browser. This is something I verified and re-verified back then, and I just re-verified again (2014-10-09): -AddThis and countless other 3rd-party which purpose is to data-mine you will be foiled by blocking 3rd-party ` + +And within it, the fingerprinting will take place, and report to AddThis servers: + +**Request URL:** `http://ct1.addthis.com/static/r07/sh175.html` +**Cookie:** `uid=54371180c23c9d63; __atuvc=1%7C41; uit=1; km_ai=543717496fd011.83307994` +**Host:** `ct1.addthis.com` +**Referer:** `http://www.ibtimes.com/` + +The above occurred with Adblock Plus with _EasyList_ + _EasyPrivacy_ enabled. Note that the cookie header which contains the fingerprinting information will be stripped if you have _"Block third-party cookies and site data"_ enabled. + +AddThis and many other 3rd-parties which purpose is to data-mine you will be foiled by blocking 3rd-party `