Evidence

This is a selection of evidence submitted to data protection authorities. This list is not complete, and may be added to. 

General overview of Real-time bidding 

• Ryan Report on behavioural advertising and personal data.
• Number of bid requests per day.

Personal data in RTB bid requests 

• Examples of data in a bid request from IAB OpenRTB and Google Authorized Buyers' specification documents. 
• List of personal data in bid requests (see Appendix of Ryan Report on behavioural advertising and personal data). 
• Content category data 
  
  • Google's "publisher verticals" list (special category data highlighted).
    
  • IAB's v1 "content taxonomy" list (special category data highlighted).
  • IAB's v2 "content taxonomy" list (special category data highlighted).

IAB documents acknowledging lack of control over personal data in bid requests. 

• IAB Europe 2017 paper, sent to the European Commission. 
• IAB TechLab document "Pubvendors.json v1.0".