Personal Data and Online Advertising

An expanded tool tracks the way personal information is used in online advertising. “With computer scientists, Augustin Chaintreau and Daniel Hsu, and graduate students Mathias Lecuyer, Riley Spahn and Yannis Spiliopoulos, [Roxana] Geambasu has designed a second-generation tool for bringing transparency to the Web. It’s called Sunlight and builds on its predecessor, XRay, which linked ads shown to Gmail users with text in their emails, and recommendations on Amazon and YouTube with their shopping and viewing patterns. The researchers will present the new tool and a related study on Oct. 14 in Denver, at the Association for Computing Machinery’s annual conference on security.”

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