Do you expect IC professionals to be that brazen in leaving a government paper trail of the felonies they are committing against a sitting president?
I can tell you this (many years since I worked at the Puzzel Palace ). NSA dumps a good portion of the internet on to internal servers. So you can sit at your desk and 'surf the net' without actually being on the real net. IT constantly monitors what you look at.
It would not be hard to see who constantly goes out to DU to read during lunch, assuming that site gets dumped.