uscm: 13.5/52 

7 April 1954 

'fOP ffi!i0RE1' 

MEMJRANDUM FOR THE MEMBERS OF uscm: 

Subject: Possible Compromises of COMINT Information. 

1. The enclosures are forwarded for information. 

2. Difficulties inherent in the establishment of new procedures 

tor reporting possible compromises of COMINT information resulting 

from transmission by electrical means have militated against illlmediate 

adherence.to the provisions of CmD /19. For this reason the enclosed 

reports and futur~ reports of such compromises which occurred during 

the first quarter of 1954 will be submitted in accordance with 

uscm 13/.308 now rescinded • 

.3. It is anticipated that such compromises occurring aft~ 

.31 March 1954 will be reported in .tuil in accordance with cmn 1/9. 

Enclosures 

1. NSA Serial 00593 ot 23 Feb 1954. 

2. NSA SeriaJ. 000808 of .L Mar .L954. 

Captain, • • Navy 

ecutive Secretary, USOIB 

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WH:BM Mlf"Aftld'Ef) FfteM 'fff!l metoBtJitE5. 

USCIB: .l3.5/52 

TO>." SECRET 

Declassified and approved for release by NSA on 02-11-2014 pursuant to E .0. 1352\3 
• 

NATIONAL SECURITY AGENCY 

Washington 25, D. c. 

SeriaJ.: OU59S 

23 February 1954 

MEMORANDUM FOR THE EXECUTIVE SECRET.ARY, USCIB 

SUBJECT: Possible Compromise of COMINT Information 

l.. On 2 September l.953, a cryptosecurity violation occur-.t"ed at 

the 15th Radio Squadron 1-bbil.e, Asbiya Air Force Base, Japan. On 

that date, portions of four messages, cl.assi:f"ied CONFIDENTIAL, were 

enciphered in depth and transmitted over communication circuit composed 

of radio and wire links to the Director, National. Security Agency. 

Since the relevant transmissions were not immune from interception, the 

in£ormation concerned must be considered compromised~ 

2. The four messages invo.L ved were Daily Coverage Reports which 

if intercepted, and the depths .Located, cOUld result in the disc.Losure 

of much of the activities of this particular station as to their int~ 

cept coverage. 

3. Appropriate instructions have been issued to prevent a 

recurrence o:f" violations of this type. 

4. The Director, GCHQ has been requested to inform the appropriate UK authorities. 

5. The foregoing is submitted in accordance with the inclosure to 

USCIB: 13/.308. 

FOR THE DIRECTOR: 

(Signed) 

GEO. E. CAMPBELL 

Colonel AGC 

Adjutant General. 

Enclosure l with USCIB lJ.5/52 dtd 6 Apr 1954. 

SECR:ET 
.. 

TOPSU~Jp:A59623 ~V.A•~.A -

NATIONAL SECURITY AGENCY 

-Washiiigton· 25, n; c. 

MIMmANDUM FOR THE EXECUTIVE SECRET~Y, USCIB 

Serial: OouSOS 

1 March 1954 

SUBJECT: Possible Compromise of COMINT Information 

1. On 2U November 1953, a caamnm:ication security vioJ.ation 

occurred at the 7th Weather Group, Elmendorf Air Force Base, Alaska. 

On that date, a portion of a message, classif'ied TOP SECRET CODEWORD, 

was transmitted inadvertently in the clear over a circuit composed 

of' a dual termina.L cable, physically .Located within the limits of 

Elmendorf' Air Force Base, to the Joint Communication Center at the 

same station. Since the relevant transmission was not immune from 

interception, the information concerned ma.st be considered compromi~ed. 

2. While the violation is not indicative or COMINT success, 

association or the TOP SECRET CODEWORD used with Special Weather 

Intelligence is involved. 

3. Appropriate instructions have been issued to prevent a 

recurrence of' violations of' this type. 

4. The Director, GGHQ, has been requested to inform appropriate 

UK authorities. 

;. The foregoing is submitted in accordance with USCIB Directive No. 9. 

(Signed) 

E. M. Gibson 

Lt. Col. , AGC 

Asst. Adj. Gen • 

.. 

Enclosure 2 with USCIB 13.5/52 dtd 6 Apr 1954. 

'FOPSEORET