There have been leaks by employees or contractors — including the well-known one by Booz Allen Hamilton employee Edward Snowden — and also leaks by the Shadow Brokers, a group that has proved untraceable.
But, The New York Times reported, the investigators were still in the dark as to whether it was a nation state — most likely Russia — that stole the exploits, or whether an insider was to blame.
The Shadow Brokers, who periodically surface with a post in what appears to be deliberate broken English, have released some NSA exploits to the world at large and offered others for sale.
And a third, Reality Winner, was arrested for leaking a single document to The Intercept.
The NYT story did not concentrate on any one aspect of the leaks; rather it was a general take on the effect that the leaks have had on the agency and morale within.