Woah.
In the BBC account of four unnamed leakers being charged,
"Jeff Sessions said the suspects were accused of divulging classified material or concealed contacts with foreign intelligence officers...
"He said there had been a "dramatic" increase in recent months of unauthorised disclosures to the media and even foreign adversaries."
US attorney general says four charged in crackdown on leaks
www.bbc.co.uk/news/world-us-canada-40829559
So... this isn't just (or at all?) about leaks to journalists - which of course we tend to know the details of, as they get published. This is about people who aren't Trump giving material to foreign powers.