An investigation by The Markup found that pixel collects data from many students using other websites, including high schoolers who sign up for financial aid and college testing. Then the code shares ...

This article was copublished with The Markup, a nonprofit, investigative newsroom that challenges technology to serve the public good. Sign up for its newsletters here. Picture a high school student ...

In the world of digital marketing, tracking pixels have long been the secret sauce for companies trying to understand their customers. These tiny, invisible bits of code are embedded in websites and ...