The Information Commissioner's Office (UK) declared real-time ad buying, based on "highly detailed profiles," doesn't comply w/GDPR.

@thekatbarnett explains, saying, "Consumers have a right to know where their data is going & how it is being handled." https://jaxenter.com/rtb-privacy-risk-160864.html

Original tweet : https://twitter.com/DuckDuckGo/status/1169970257534083074