Three MuckRock users filed FOIA requests from 2013 to 2015 for FBI files on The Tor Project, Inc., the developer of Tor. The software enables (in theory) untraceable access to both the regular internet and a network of websites inaccessible through other browsers, commonly called the “dark web.” Each request returned radically different sets of records, most predating the first request, and all linked only by their lack of substantial information.