France's consumer rights group UFC-Que Choisir said on Tuesday it had filed suit against Twitter, Facebook and Google over users' privacy issues. The group filed a suit in the Tribunal de Grande Instance of Paris court for illegal data-collection practices. Last summer, the group had warned the that it would file suit if they did not address users' privacy concerns.

UFC-Que Choisir says that the three social networks do not clearly present their Terms and Conditions, which are in some cases inaccessible, unreadable and filled with hyperlinks, and also sometimes are referring to English pages.

"Worse, the networks persist in authorising the widespread collection, modification, preservation and use of the data of users and even of those around them," it said.

"Faced with such abuses," the group is asking French judges to "order the suppression or modification of the myriad of contentious clauses imposed by these companies."

In January, France's data protection watchdog imposed a 150,000-euro fine on Google for failing to comply with privacy guidelines.