The Content Taxonomy has evolved over time to provide publishers with a consistent and easy way to organize their website content. For example, to differentiate “sports” vs. “news” vs. “wellness” material. IAB Tech Lab’s Content Taxonomy specification provides additional utility aimed at minimizing the risk that content categorization signals could be used to generate sensitive data points about things like race, politics, religion, or other personal characteristics that could result in discrimination. While the Content Taxonomy itself doesn’t constitute sensitive data – it simply categorizes page content, and does not on its own reveal information about a user – there are few technical controls preventing taxonomy nodes being associated with individual IDs to build behavioral profiles over time based on content preferences.