Your web browsing habits may be less private than you think

I have little doubt that this is already widely applied! Is it being exploited or abused? Who is behind?

"... The concept is simple. Just as the ridges on a fingerprint are unique to an individual, so are the nuggets of information stored in your web browser. To make the web easier to navigate, your browser knows what device you’re using, its settings, and hundreds of other details. Analyzed together, these scraps of data can reveal your identity to third parties, allowing them to build a profile and track your movements from site to site. ..."

Your web browsing habits may be less private than you think | IBM Research Blog IBM researchers have uncovered a new form of fingerprinting that can bypass the privacy protections of major web browsers like Safari and Firefox to infer a user’s identity.