'fOP~~R6BF 

NATIONAL SECURITY AGENCY 

WASHINGTON 25, D. C. 

Serial:J699 

SUBJEX::T: Report of Communications Security Violations 

TO: Chier or Naval Operations (OP-30) 

The Pentagon 

27 May 1955 

1. Attached b the quarterly (January tbfough March 1955) 

compilation of' communications security violations report~d to or 

noted by this Agency which occurred in communications of those 

Navy stations which handle C011INT t:i:aff'ic. You have been furnished 

completed evaluations of those cryptographic violations which were 

reported as possible compromises. 

2. This report is furnished prime,rily for guidance in 

improving the security of' COMINT communications. Similar reports 

are forwarded to Chief', Army Security Agency, and Commander U. S. 

Air Force Security Service. Upon request, additional copies of' 

this report will be provided in sufficient quantity for dissemination to those activities under your Command engaged in COMINT 

operations. 

3. Extracts :f'rom this quarterly summary may be classified 

SECRET if' the extracts a.re restricted to lists of' violations which 

involve messages classified no higher than SECRET. For example, 

the list of' violations committed by an activity which originates 

messages classified no higher than SECRET may be extracted and 

forwarded to that activity as SJOC!RET material. ' The key list is 

S~RET in classification. 

4. This correspondence may be downgraded to SECRET upon 

removal of' Inclosure 1. 

FOR THE DIRJOOTOR: 

2 Incls: 

C. M. MILLER, 

Major AGC 

Asst. Adj. Gen. 

1. Communications Security Violations APPENDED DOCUMENTS _... 

by :r.ravy stations. Annended Docum~qutm'~n1t?arance 2. Key List of: Navy Vi&ili-!fons. 

Copy furnished: 

CNO (OP-300) 

'.f6P ~M~ Cotr:mOLf 5511'7'6 

PAGE l OF l PACl'ES 

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T0P SECRET 

eclassified and a roved for release b NSA on 09-04-2014 ursuant to E.O. 1352 
cc: NGA Europe 

NflA Uni tcd. Kingclom 

Nr-~/\. P'ar Ea.st 

l'TSA Alaslm 

NSA Pacific 

AG 

c/s 

COMSEC (31 S/ASST~ 

COM 

PROD 

06B 

411 

413 

Rr?ri.r.i. l : 3699 

27 nay 19)5 

M/R: This is a compilation of comnru.n.i.ca.Lions security violations committed 

by Navy COMINT stations durin~ January, February, and March 1955· A 

similar report will be forwarded to Chlc~ A.SA1 and COMDR, USAFSS. 

'iH, :-"'# • lV...vU4'11 

M. M. Orrls/4131-1/60!~54/gh 

Appended Documents Require Cryptoclearance 

~eia SP..eHE'f ee:tff'Ren # 5511?0•A 

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'i'OP SHORfff 

COMMUNICATIONS SECURITY VIOLATIONS 'BX NAVY STATIONS 

Ul'G 

22 

110618z 

221032z. 

180900Z 

09035oz 

100203z 

100300Z 

ioot~15z 

190520Z 

21075oz 

22o831z 

131302Z 

161818z 

21034oz 

INCL l 

'l'RIGRJ\PH 

UZR 

WMU 

AJY 

AVF 

ANA 

ATJ 

ATL 

AUB 

DUP 

EHC 

EFJ 

BEC 

BMR 

BZU 

KEY NO. 

USN-10 

MARCH 

8 

USN-11 

Jl\NUJ\RY 

3d 

7a 

USN-12 

Jl\NUARY 

1 

3b 

3a 

2 

2 

2 

MARCH 

USN-13 

JANUARY 

4 

3a 

6 

FEBRUARY 

3d 

3d 

1 

REMARKS 

Operator. :in "Text" 

Broke on BEYI'JI vice BEn'GI 

Brol{e on CC vice DD I 

Sections 1, 2, and 3 broke on PM 

rotor arrangement 

Broke on UTAKY vice VTA.KY 

Broke on XSOOI vice XSl-IDI 

Broke using key list assigned to NSA 

Broke using key list assigned to NSA 

Broke using key list assigned to NSA 

Omitted letter in message indicator 

Broke on ZX:AIA vice ?A.XIA 

Broke us:l.ng trigraph EJF 

Broke on MEASL vice MEMSL 

Broke on XEARA. vice MGARA 

Broke on PM rotor arrangement 

'i'OP GBOFlffi' CON'f'Rtrf1 fl 55ll'f6-:B 

PAGE 1 OF 3 PAGES 

COPY If}. 

T6P SEERET 
VIOIATIONS (Cont. d) 

1Q1910Z 

1808467.. 

i8153oz 

151705Z 

~111608Z 

i11615z 

i8193oz 

110405Z 

291917z 

INCL l 

TRIGRAPH 

DCB 

BZN 

BNN 

ACD 

AJL 

EDZ 

AJT 

AUN 

KEY NO. REMARKS 

USN-13 (cont'd) 

MJ\.RCH 

3d 

3d 

1 

5 

1 

3d 

USN-14 

JANUARY 

MARCH 

USN-15 

JANUARY 

USN-19 

JAl'IDARY 

FEBRUARY 

3d 

USN-20 

JANUARY 

3d 

MARCH 

4 

2 

Broke on YFFWQ vice YWFFD 

Broke on'XKCYI vice XKC'Yl!": 

Broke on AM rotor arrangement 

''UEJZL" 

Broke on AM rotor arrangement 

Broke on RHMNN vice RPMNN 

Broke on BRSHV vice RBSHV 

Broke on JRAF.F vice JRYFF 

Omitted letter in message indicator 

~ OEIORff.P CSfff'ROfr ,¥ SS13:99 B 

PAf~E 2 OF 3 PAr;ER 

COPY #Z 

TOP SECRErr 
• 

• 

• '.POP Si!GRJi."l' 

.-----

100838Z 

181854z 

201212Z 

16 

16 

o40802z 

142153z 

150003Z 

150017Z 

100010Z 

INCL 1 

TRI GRAPH 

CQN 

EGK 

DLT 

APS 

AGN 

AGP 

AEG 

KEY NO. 

1 

3c 

USJ'!.-:27 

JAMUARY 

REMARKS 

Broke on AM rotor arrangement 

for 11 Jan 

Broke on DGUYY vice DBUYY 

FEBRUARY 

1 

8 

8 

7a 

8 

USN-39 

JANUARY 

MARCH 

USN-l~o 

JANUARY 

Broke on AM rotor arrangement 

Keyboard operation 

Keyboard operation 

Broke on BB vice AA 

Operator thought he was on room 

circuit 

FEBRUARY 

2 

2 

3d 

MARCH 

3 

Broke using keylist assigned to NSA 

Broke using keylist assigned to NSA 

Broke on CKSZT vice CKSZH 

'feP OEIOflI!l'i' OON'l'R0:E. -If 551!1'9•B 

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TOP SECRET 
.. . • 

----

KEY LIST OF"NAVY VIOLATIONS .. January, February, & March, 1955 

ROTOR ARRl\HGEMEl'lT 

1. Use of a. rotor arranr;ement for an lnappropriate cryptoperiod, 

day or month. (Reference AFSAG 1262, para 5006a.(l)) 

2. Use of' a rotor arrangement from a key li~t assigned to another 

station. (Reference AFSAG 1262, para 5003b) 

ROTOR ALICHJMENT AND MESSAGE INDICATOR 

3. Discrepancy between the messac;e rotor alignment resulting from 

decipherment of the message indicator and the message rotor 

8.l:i.gnment actually required to de1cipher the message, although 

the latter was correctly derived. The discrepancy involves (a) 

transposition of letters, (b) substitution of a letter alphabetically adjacent to the correct letter, (c) substitution of a 

phonetically similar letter, or (d) errors in encipherment. 

~. Omission or addition of one or more letters to the message indicator. 

5. The message rotor alignment was transmitted in the clear. 

(Reference AFSAG 1231B, para 6oo4a(2)) 

KEY GROUP 

6. The trigraphic key-group indicator in the message indicator did 

not correspond to the key group actually used for encipherment. 

Reuse of a key group was not involved. (Reference AFSAG 1262, 

para 5004b) 

MACHINE DESIGNATOR AND MULTISWITCH SE'l'TING 

7. The machine designator in the message indicator d:i.d not correspond 

to the multiswitch setting used :for encipherment. The messages 

were {a) correctly enciphered or (b) incorrectly enciphered. 

(Reference AFSAG 1262, para 6o02a(l)) 

ADDITIONAL VIOLATIONS 

8. Transmission in the clear of classified information. 

INCL 2 CRYPTOCLF.ARJ\.NCE REQ.UIRED 

SECRET 
.. '• 

.. 

'i'eP SECai!l! 

cc: NSA F.urope 

NSA United Kingdom 

NSA Far Ea.at 

NSA Alaska 

NSA Pacific 

AG 

c/s 

Serial: 3913 

7 June 19.5.5 

COMSOO (3) 

gb~SST_llf ~ ... PROD 

o6B 

411 

413 

M/R: This is a compilation or communic,tions security violations committed 

by Army COMINT stations during January, February, and March 1955· A similar 

report will be forwarded to CNO and COMDR, USAFSS. ASA furnished 40 copies. 

Recipients under internal distribution to be furnished one copy each or 

Incl 1 and 2. "ht,.~)(..~ 

M. M. Orr1s/4131.1/6rj+54/mw 

APP:8NDED DOCUMENTS 

REQUIRE CRYPTOCJ..EARANCE 

;igp li!ll!:QRi!~ c~OL I ss J:Aa~ '8 

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