Countless websites (truly countless—the scope, as we shall see, is nearly incomprehensible) are shipping private data about your web activity directly to the tech giants’ doorsteps. Thanks in part to the efforts of privacy researchers like Libert, we know this already, have known we’re being tracked for years—yet we lack knowledge of the specifics, and we lack agency, so this sea of privacy violations becomes another Bad Thing that happens on an internet teeming with them.