~02 

USCIB: 4.2/47 IWlmali 1/IA 00MI!f.P 0IlAiftf.MiS 0Hi:IY 

16 May 1955 

'i'0P SEisma' 

MEMORANDlM FOR THE MEMBERS OF USCIB: 

Subject: 

References: 

Promulgation of USCIB Directive No. 7 (New). 

(a) USCIB 4.2/43 dated 18 April 1955. 

(b) USCIB 4.2/45 dated 3 May 1955. 

1. The objections raised during the prescribed interregnum having 

been satisfactorily reconciled, the enclosure with reference (a) as 

amended by reference (b) is considered approved by USCIB as of 12 May 1955. 

2. In regard to paragraph 3 of reference (b) it was agreed that the 

Off shore Islands of Formosa should be stated specifically as Quemoy and 

Matsu Islands. 

J. A revised Annex A and page 1 of Annex B which together incorporate 

the above mentioned emendations are enclosed herewith for insertion in 

place of the present Annex A and page 1 of Annex B. 

4. CIBD #7 (Revised as of 25 October 1950) and CIBD #14 dated 14 June 

1954 are hereby cancelled. The latter will remain an open number. ?he 

enclosure with reference (a), after substitution of the two new pages, 

should be appropriately labeled as USCIB Directive #7 and stamped with the 

date 12 May 1955 in the spaces provided. 

5. Additional copies of this directive are obtainable from this 

office on request. 

6. Copies will be forwarded to the SUSLOs (London and Ottawa) for 

information and d~stribution to the authorities to which they are accredited. 

Enclosures 

a/s 

USGIB: 4.2/47 

Declassified and approved for release by NSA on 03-10-2014 pursuant to E. 0. 1352B 

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1. 

2. 

~02 

ANNEX A 

IQ 

USCIB DIRECTIVE NO. 7 

CURRENT EXAMPLES OF 

SPECIFIC AREAS INVOLVING UNACCEPTAB!.E OR UNDUE RISK 

TO I1'1])IVIDUALS HAVING fil!OWLEDGE OF CURRENT VALUE .ABOUT CO~ 

Areas involving unacceptable risk: 

~· Iron Curtain countries -

(1) USSR 

(2) Korean Democratic Peoples Republic (North Korea) 

(3) Chinese Peoples Republic (China) 

(4! Tibet 

(5 Outer Mongolia (6 Eatonia 

(7 L.:itvia 

(d) Lithuania 

(9) Poland 

(10) Czechoslovakia 

(11) German Democratic Republic (East Germany) 

~ (12) Hungary 

(1.3) Rumania 

(14) Bulgaria 

(15) Alba.Dia 

(16) North Viet Nam 

b. Connnunist dominated zones -

(l~ Porkkala Area of Finland 

(2 Soviet Sector of Berlin 

(3) Soviet Sector of Vienna 

(4) Soviet Zone of Austria 

~C• Other .3.I'eas - None 

Areas "'i nvol vin~ undue rj.sk: 

a. U.S., 3ritish and French Sectors of Berlin 

b. U.S., British, French and International Sectors of Vienna 

c. Y~oslavia 

d. Hacao 

e. The Associated States (Indo China) 

f. Quemoy and Matsu Islands 

.3. SECCOH shall review thj.s list not less tho.n semi-annually with a 

view to recorm:1ending appropriate revisions. 

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.ANUEJ" B 

TO 

- us cm DIRECTIVE r:o. 7 

GUIDE TO UNIFGmf ASSIGIH-1ENT TO GROUPS m~ER SEC'l'Il"•l! II 

1. It. is considered r..t present that any person who hc'i.s l•eon 

indoctri1"Jated for Category II or III C011INT and who has been exposed 

to the er.id products of, or processi11g within these categories, 1:iay 

have 11lmouledge of current value" c.i.nd becomes a oandid.i-i.te for assi~n-

:i::ient to ~t least Groups B and C respectively. In addition, possession of 

the following related information uould warrant assignment to Group C: 

~. K..~owledge of the overall distribution of the u.s.-u.K. 

OJliJIIIT effort including the size, locution and purpose of advanced 

processing unit.s and intercept establishments. (The intent here is 

that the knowledge should be both broad and deep.) 

b. K1.1owledge of program.l!ling techniciues of general purpose 

comput.er equip.nents for cryptanalytic problens. 

c. K~owledg~ of U.S. capability to intercept radio trans-

!lliasions "Where the equipments ei.nd techniques required go significantly 

b<:.yond equipme.:J.ts arJ.d t'3chn.iques in general use in the ~t. Tfl..is m::i.y 

ir.clude, for exarople, specii:i.l eriuipments a.."ld tech.."liques necessitated 

by verJ high or lm1 frequencies e!lcountered, new multiplex transm.i.&sions, 

cipl"...or..y, cifo.x, uJ.trt.-speed, 11oiso type cominu..11ications, etc. 

2. In El..t')ticipation of the a.ssienment of Groups B and G persormol 

to hazardous activitie::, e.rry IJ'"SCJL ms.m.ber should, whenever he con&:5-r!Grs 

jJvisa.blc, in viei.r o.i' specittl cii~c'l.llllstai:ces a.ff ecting the d.ecrea of 

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