The European Union's top court has sided with a privacy challenge to Meta's data retention policies. It ruled on Friday that social networks, such as Facebook, cannot keep using people's information for ad targeting indefinitely. The judgement could have major implications on the way Meta and other ad-funded social networks operate in the region.

Social media platforms such as Meta's Facebook must limit the use of personal data including someone's sexual orientation for targeted advertising, the European Union's top court ruled Friday.