A security researcher has devised a new technique to track users by analyzing the mouse movements. The technique relies on Javascript to create a unique fingerprint of internet users. The researcher created a quick and dirty PoC called UberCookie to demonstrate that is possible to fingerprint a user in a controlled environment. To avoid beign tracked with this fingerprint technique users can deactivate Javascript completely. The Tor Project did not respond to a request for comment, but it seems that its developers are looking into this issue.”]
Source: https://securityaffairs.co/wordpress/45172/breaking-news/fingerprinting-users-tor-network.html