Silicon Valley’s biggest companies are always watching you — even when you’re browsing pornography websites in incognito mode. What these companies might be doing with pornography-site browsing data is a mystery. Oracle, which owns a number of large data brokers and has been called a “privacy deathstar,” could, for example add data collected by trackers with its current profiles. Dr. Maris argues that this lack of disclosure is similar to the issue of sexual consent. “As in any sexual interaction, silence must not be mistaken for consent,” she said. “Individuals should have a clear understanding of the power dynamics of...