Facebook-owner Meta must minimise the amount of people’s data it uses for personalised advertising, the EU’s highest court says.
The Court of Justice for the European Union (CJEU) ruled in favour of privacy campaigner Max Schrems, who complained that Facebook misused his personal data about his sexual orientation to target ads at him.
In complaints first heard by Austrian courts in 2020, Mr Schrems said he was targeted with adverts aimed at gay people despite never sharing information about his sexuality on the platform.
The CJEU said on Friday that data protection law does not unequivocally allow the company to use such data for personalised adverting.
“An online social network such as Facebook cannot use all of the personal data obtained for the purposes of targeted advertising, without restriction as to time and without distinction as to type of data,” it said.
Meta says it does not use so-called special category data to personalise adverts.
“We await the publication of the Court’s judgment and will have more to share in due course,” said a Meta spokesperson responding to a summary of the judgement on Friday.
They said the company takes privacy “very seriously” and it has invested more than five billion Euros “to embed privacy at the heart of all of our products”.
Facebook users can also access a wide range of tools and settings to manage how their information is used, they added.
“We are very pleased by the ruling, even though this result was very much expected,” said Mr Schrems’ lawyer Katharina Raabe-Stuppnig.
“Following this ruling only a small part of Meta’s data pool will be allowed to be used for advertising – even when users consent to ads,” they added.
Dr Maria Tzanou, a senior lecturer in law at the University of Sheffield, told the BBC that Friday’s judgement showed data protection principles are not “toothless”.
“They do matter when big tech companies process personal data,” she added.
Will Richmond-Coggan, a partner at law firm Freeths, said the EU court’s decision will have “significant implications” despite not being binding for UK courts.
“Meta has suffered a serious challenge to its preferred business model of collecting, aggregating and leveraging substantial data troves in respect of as many individuals as possible, in order to produce rich insights and deep targeting of personalised advertising,” he said.
He added the company could face similar challenges in other jurisdictions based on the same concerns – noting Mr Schrems’ challenge was based on principles that exist in UK law.
Austria’s Supreme Court referred questions over how the GDPR applied to Mr Schrems’ complaint, answered on Friday, to the EU’s top court in 2021.
It asked whether Mr Schrems referring to his sexuality in a public setting meant he gave firms the green light to process this data for personalised advertising, by making it public.
The CJEU said that while it was for the Austrian court to decide if he had made the information “manifestly public data”, his public reference to his sexual orientation did not mean he authorised processing of any other personal data.
Mr Schrems’ legal team told the BBC that the Austrian Supreme Court is bound by the Court of Justice’s judgement.
They said they expect the Supreme Court’s final judgement in the coming weeks or months.
Mr Schrems has taken Meta to court several times over its approach to processing EU user data.
Additional reporting by Chris Vallance
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