top-secret information

Emphasis on “carefully,” since he makes a point of not divulging any compromising top-secret information.

By 1943, Blunt was sending reams of top-secret information to Moscow.

Spies and spymasters spend their lives in the wind, dealing in top-secret information.

Or had he, the Vice-President, been in a fog when vital, top-secret information had been made public?

A good thing, too, otherwise the enemy would be getting our top-secret information in print all the time.

But top secret information isn't talked about by the people who know it, unless they are actively at work on it.

The top secret information was simply that it was still impossible to supply the Platform.