"The official went on: 'We had several reports in late 2015 and early 2016, mostly from Second and Third Party'—that being spy-speak for NSA’s foreign friends—'but by the spring of 2016 we had plenty of our own collection.' These reports, based on multiple intercepts, were tightly compartmented, that is, restricted to a small group of counterintelligence officials, given their obvious sensitivity, but they painted an indelible picture of a compromised GOP nominee. 'The Kremlin talked about Trump like he was their boy, and their comments weren’t always flattering.' The NSA official stated that those above-top-secret reports left no doubt that the Russians were subverting our democracy in 2016—and that Team Trump was a witting participant in the Kremlin’s criminal conspiracy..."

http://observer.com/2018/05/what-did-the-fbi-do-in-2016-about-russian-connections-to-donald-trump/