The California-based firm vowed to appeal the ruling
Facebook must "stop following and recording internet use by people surfing in Belgium, until it complies with Belgian privacy laws", the Brussels court said.
It based its verdict on a probe by Belgium's privacy watchdog into Facebook's use of pixels and cookies, tracking devices that follow a user's internet activity.
The court warned Facebook it could face fines of 250,000 euros per day or a maximum of 100 million euros ($125 million) if it failed to heed the ruling.
"Facebook must also destroy all personal data obtained illegally," the court ordered.
Finally, it said, the social network must publish the complete 84-page verdict on its own website and excerpts in Belgium's Dutch-language and French-language newspapers.
Read more at: https://phys.org/news/2018-02-belgian-court-facebook.html#jCp
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