California revealed for the first time an 18-month investigation into Facebook Inc's privacy practices and accused the social media giant in a court filing on Wednesday of hampering the investigation.
Revelation of the probe is the latest bad news for Facebook, which is already under investigation by 47 U.S. states. Some states, particularly New York and Nebraska, have raised concerns that Facebook and other big tech companies engage in anti-competitive practices, expose consumer data to potential data theft and push up advertising prices.
Facebook had no immediate comment.