1. CONFIDENTIAL GUARD SECURITY OF TELEPRINTER NET WORKS IN THE U.K. (Previous reference: J.I.C.(52)140th Meeting, Minute 3, Conclusions (1) and (2), dated 12th December, 1952). THE COMMITTEE had before them:(a) a minute by the Secretary+ asking:(i) whether the Committee now wished to make an official approach to the U.S. authorities in Washington on the subject of the security of the U.K. defence teleprinter networks; and (ii) whether classified messages should be sent in plain language on the new G.P.O.