The forum was the target of
Operation Shrouded Horizon, an international law enforcement effort led by the
Federal Bureau of Investigation (FBI), which culminated in the site's seizure and arrests of several of its members in July 2015. According to the FBI, the case is "believed to be the largest-ever coordinated law enforcement effort directed at an online cyber criminal forum". Upon announcing the 12 charges issued by the United States,
Attorney David Hickton called the site "a cyber hornet's nest of criminal hackers", "the most sophisticated English-speaking forum for criminal computer hackers in the world" which "represented one of the gravest threats to the integrity of data on computers in the United States". On Monday, September 21, 2015, Daniel Placek appeared on the podcast
Radiolab discussing his role in starting Darkode and his eventual cooperation with the
United States government in its efforts to take down the site. There were around two hundred and fifty to three hundred individuals in the Darkode forum. When arrests were made, they were made over a span of twenty countries. Canada, United States, Germany, Croatia, Nigeria, Romania, and Cyprus were some of the countries that these individuals were found. When Darkode was shut down, there were twenty-eight individuals arrested with connections to this forum. Of these twenty-eight arrests, there were twelve people being charged by the United States. The rest of the arrests were made across the world in various countries. == Revivals ==