On 20 June 2013, the G29 (the working group based on Article 29 on data protection composed of the 27 authorities in charge of personal data protection within the Member States of the European Union) issued a warning to Google, Inc. that it must comply with national laws on the protection of personal data. The G29 requires Google, among other measures, to allow users to define the term of retention of their data and obtain users' agreement before installing cookies into their terminals. Google now has four months to comply with the warning and risks being sanctioned otherwise.