Opinion no 4/2007 on the concept of personal data adopted by the Art 29 Data Protection Working Party (Justice and Home Affairs Division of the European Commission) on the 20th June 2007 (Reference WP136)

This opinion illustrates the broad nature of the concept of personal data and it will help you in improving your understanding of what type of information is generally considered personal data through the use of concrete examples of everyday privacy issues.

Opinion no 1/2010 on the concepts of "controller" and "processor" adopted by the EU Article 29  Working Party, on 16 February 2010 (Reference WP169)