Prosecutors with the U.S. Department of Justice asked to dismiss a case involving a suspect who visited the Playpen dark web child pornography site in 2015. The case is one of more than 100 related to the site currently wending their way through the judicial system. The DOJ has remained resolute to keeping the exploit under wraps. Last April the FBI refused to comply with the judge s request to describe how it compromised the Tor browser. The FBI classified portions of the tool, exploits used in connection with it in June 2016, making it highly unlikely information about exploit will become public anytime soon.
Source: https://threatpost.com/doj-dismisses-playpen-case-to-keep-tor-hack-private/124102/