A browser fingerprinting script is a piece of JavaScript code that runs inside a web page and works by testing for the presence of certain browser features.
Today, browser fingerprinting is commonly used by online advertisers as a next-gen user tracking mechanism. Advertisers run different types of fingerprinting operations, create one or more “fingerprints” for each user, and then use them to track the user as he/she accesses other sites on the internet.
Because of the privacy-intrusive way that online advertisers are currently using browser fingerprinting, several browser makers like Firefox, Chrome, Opera, Brave, and the Tor Browser, have deployed features to detect and block these types of malicious code.
Link: A quarter of the Alexa Top 10K websites are using browser fingerprinting scripts
via www.zdnet.com
