A specific NSA unit, dubbed NSA Territorial Dispute (TeDi) developed these scripts to monitor activities of nation-state actors. At the time of the theft of the NSA hacking tools and exploits, the NSA was tracking at least 45 different state-sponsored hacker groups. The NSA may have been tracking the Dark Hotel APT group at least since 2011, about three years before the group was discovered. The team was supposed to detect and counter sophisticated nation-State attackers more quickly, when they first began to emerge online.”]
Source: http://securityaffairs.co/wordpress/69987/intelligence/nsa-territorial-dispute.html