Hundreds of the world’s top websites routinely track a user’s every keystroke, mouse movement and input into a web form – even before it’s submitted or later abandoned, according to the results of a study from researchers at Princeton University.

AirBnb, Reddit, Shutterstock, Inc, Tumblr, Etsy (ETSY.O), Twitter (TWTR.N) and a long list of small internet companies urged the Federal Communications Commission on Monday to scrap a plan to roll back net neutrality rules.