The lawsuit joins others brought against the social media giant and Cambridge Analytica in response to a report from The New York Times and The Observer of London earlier this month. The newspapers reported that Cambridge Analytica, whose U.K.-based parent SCL Group was also named in Cook County’s suit, gained access to private information of more than 50 million Facebook users, including their profiles, locations and what they like. The firm claimed its tools could analyze voters’ personalities and influence their behavior with targeted messages.