A Facebook User Operations Safety Team worker looks at reviews at Facebook headquarters in Menlo Park. (Paul Sakuma, AP, File)
Berlin - German consumer groups say they will file a lawsuit against Facebook unless the social network changes its terms of service.
The Federation of German Consumer Organisations said on Thursday it has sent a cease-and-desist letter to Facebook's European headquarters in Ireland.
The letter cites 19 clauses in the company's terms of service and data protection guidelines that the consumer groups claim breach German law.
German Justice Minister Heiko Maas backed the complaint, saying Facebook's data protection rules are too vague. He said users should be able to opt out of certain requirements without having to quit Facebook entirely.
The California-based company has faced regular legal challenges from privacy advocates in Europe.
Facebook didn't immediately respond to a request for comment.