The term “classified information” means any information that has been determined pursuant to Executive Order No. 12333 of
December 4, 1981 ([former]
50 U.S.C. 401 note) [now
50 U.S.C. 3001 note], Executive Order No. 12958 of
April 17, 1995 ([former]
50 U.S.C. 435 note), or successor orders, to require protection against unauthorized disclosure and that is so designated.