How does the MSM know every move of Mueller and his Clinton Team ?
Based on what we've seen from the media over the last six months, I'd say there's no better than a 50% chance that what you're reading is accurate anyway. And this isn't because the media is deliberately lying, either ... it's because whoever is providing the information to the media -- and it may very well be Trump people doing this -- is deliberately lying to them.
Good question. I would also ask two additional questions:
1. Does the MSM actually know what Mueller and his team are doing or is this disinformation?
2. If this information is accurate, what would motivate a person to violate their ethical and legal responsibility to keep it confidential?