Facebook has been ordered to curb its data collection practices in Germany after a landmark ruling yesterday that the world's largest social network abused its market dominance to gather information about users without their consent.
Germany, where privacy concerns run deep, is in the forefront of a global backlash against Facebook, fuelled by last year's Cambridge Analytica scandal in which tens of millions of Facebook profiles were harvested without their users' consent.
The country's antitrust watchdog objected in particular to how Facebook pools data on people from third-party apps - including its own WhatsApp and Instagram - and its online tracking of people who aren't even members through Facebook 'like' or 'share' buttons.
"In future, Facebook will no longer be allowed to force its users to agree to the practically unrestricted collection and assigning of non-Facebook data to their Facebook accounts," Federal Cartel Office chief Andreas Mundt said.
Facebook said it would appeal the decision, the culmination of a three-year probe, saying the regulator underestimated the competition it faced, and undermined Europe-wide privacy rules that took effect last year.
"We disagree with their conclusions and intend to appeal so that people in Germany continue to benefit fully from all our services," Facebook said in a blog post.
In its order, the cartel office said Facebook would only be allowed to assign data from WhatsApp or Instagram to its main Facebook app accounts if users consented voluntarily. Collecting data from third-party websites and assigning it to Facebook would similarly require consent.
If consent is withheld, Facebook would have to substantially restrict its collection and combining of data. It should develop proposals to do this within 12 months, subject to the outcome of appeal proceedings at the Duesseldorf Higher Regional Court that should be filed within a month.