Companies that embed Facebook’s “Like” button on their websites must seek users’ consent to transfer their personal data to the U.S. social network, in line with the bloc’s data privacy laws, Europe’s top court said.
The ruling from the Luxembourg-based Court of Justice of the European Union (ECJ) came after a German consumer body sued German online fashion retailer Fashion ID for breaching personal data protection rules via its use of the button on its site.
A German court subsequently sought guidance. ECJ judges said websites and Facebook share joint responsibility.
Facebook said the ruling sheds clarity on website plugins, calling them an important feature of the Internet.