It relates to 12 breach notifications between June and December 2018.
Meta Platforms - the parent group of Facebook and Instagram - has been fined 17 million euro by the Data Protection Commission.
It relates to 12 breach notifications between June and December 2018.
The commission found the company failed to have "appropriate" measures to ensure the safety of EU users' data.
Technology Correspondent Jess Kelly explains the decision by the DPC: