NATIONAL SECURITY AGENCY 

WASHINGTON 25, D. C. 

SUBJECT: 'Report ot Communications Security Vi~ations 

To: Chief,, Army' Security Agency 

The Pentagon 

Serial: 3913 

7 June 1955 

1. Attached is the quarterly (January through March 1955) 

compilation of communications security violations reported to or 

noted by this Agency which occ\JX'l'ed in communications of those 

Army stations which handle COMINT traf't'ic. You have been furnished 

completed evaluations of those cryptographic violations which were 

reported as possible compromises. 

2. Thia. report is furnished primaril~ tor guidance in improving the security of COMINT communications. Similar reports are 

f'orwarded to Colllll8nder, U. S. Air Force Security Service and Chief' 

ot Naval Operations. Upon request, additional copies of this report 

'Will be pro1'ided in suf'f'i~ient quantity tor dissemination to those 

activities under :your Command engaged in COMINT operations. 

3. Extl"acts from this quarterly summa.ry may be classified 

SECRET if' the ex:tracts are 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 my be extracted and forwarded to that activity as SECRET material. Th~ key list is SECRET 

in cl&ssitication. 

4. This correspondence may be downgraded to SECRET upon removal 

of Inclosure 1. 

C. M. MILLER • 

Major AGO 

Asst. Adj. Gen. 

2 Incle: 

1. Communications Security Violations 

by Array Stations (~O) 

2. Key List ot Army Violations (40) 

APPENDED DOCUMENTS 

REQUIRE CRYPTOCIEARANCE 

':OP &ilsm!l'! 99Nm0fi * ,,_3:2!6 

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TOP SE€BET 

eclassified and a roved for release b NSA on 09-03-2014 ursuantto E.O. 1352 
. 

.. 

TOP SBEmEll' 

COMMtJN;tCATIONS SECURITY V!OIATIONS BY ARMY STATIOJ.IIS 

DTG 

-

231~20Z 

25134oz 

252lo8Z 

252125z 

25215oz 

02olt-47Z 

0307ooz 

Qli.2115z 

l01203Z 

130055Z 

160909Z 

1719oll.z 

171908z 

18170'.Jh 

181829Z 

201222Z 

211921Z 

2lo820Z 

2lo822Z 

210824Z 

21o826z 

21o828z 

21o83oz 

2lo832Z 

261015z 

291003z 

31092oz 

Incl 1 

TRIGRAPH 

KBX 

APM 

nv 

CLG 

DDK 

Lm 

IFX 

LGC 

EUC 

EVL 

IIJK 

GOO 

rm 

FTr 

FUF 

FUL 

FUT 

FVE 

FVN 

JQ,G 

LIC 

MOH 

KEY NO. REMmtKS 

USM-2 

JANUARY 

8 

8 

8 

8 

8 

3d 

1+ 

3d 

6 

3o 

3d 

3d 

3c 

1+ 

3d 

3d 

3d 

7a 

7a 

7a 

7a. 1a: 

7a 

7a 

3d 

3d 

3d 

Encrypted ~ing multiswitch setting 

45132 vice 54231 

Encrypted using multiswitch setting 

45132 vice 54231 

Encrypted using multiswitch setting 

45132 vice 54231 

Encrypted using multiswitch setting 

45132 vice 54231 

Encrypted using multtswitch setting ~5132 vice 54231 

USM-3 

JANUARY 

Broke on CSQ.ZQ vice CSQ.ZO 

Omitted letter in message indicator 

Broke on FXBRN vice FXRRQ 

Broke using trigraph CIC 

Broke on PDJBF vice PDJDF 

Broke on MDLEO vice ABJPC 

Broke on MUGUP vice MUGUL 

Broke on EDWux vice EVWUX 

Omitted letter in message indicator 

Broke on VBWKF vice VBWKX 

Broke on ELVLH vice XLVLH 

Broke on HDNWK vice !Th~ 

Broke on BB vice AA 

Broke on BB vice AA 

Broke on DB vice AA 

Broke on BB vice AA 

Broke on BB vice AA 

Broke on BB vice AA 

Broke on BB vice AA 

Broke on mCXB vice IRQJCB 

Broke on DILMX vice DLIMX 

Broke on JVBXU vice RVBXU 

~GP SE9ffi!l~ eeff'ffteL#55~26-t 

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. . ..... 

. 
. 

.. 9?CJP Bf:rlRB'i' 

V!OJATIO~S (Cont'd) 

oG123oz 

o6151oz 

090143z 

091548z 

lOOOlCYZ, 

lOo456Z 

121703Z 

14olf.35z 

141359Z 

171945Z 

l81917Z 

.192023z 

22093oz 

2518ooz 

25o857Z 

281105z 

280133z 

010012Z 

Olo817Z 

olf.185oz 

07123oz 

071832z 

l20032Z 

130326Z 

1307o4Z 

1314ooz 

l31402Z 

1314o4z 

151015Z 

1.51315Z 

170945Z 

i7o417z 

241417Z 

2509ooz 

270032z 

28olf.ocz 

2817o6z 

Incl 1 

TRI GRAPH 

MSY 

MSN 

MZU 

NDF 

ant 

NHP 

NTE 

ECM 

ODW 

OUF 

GCX 

P.BW 

HHY 

IIN 

JM\o1 

JMN 

QDJ 

Q1N 

ADG 

BOT 

RAD 

BXM 

DEL 

ROT 

DLI 

EBB 

GSW 

EKX 

EJZ 

GKY 

GOK 

HOY 

HKE 

TXK 

3d 

3d 

3d 

3c 

3d 

7a 

3a 

6 

3c 

3c 

7a. 

3d 

3a 

2 

3d 

3d 

3d 

3d 

3d 

3a. 

2 

3d 

3d 

3d 

3d 

2 

2 

2 

3d 

3d 

3d 

3c 

4 

3d 

3d 

3b 

6 

REMARKS 

USM-3 (Contfd) 

Fl!:BRUJ\RY 

Broke 011 KNP.l'tr vice h'UPGU 

Broke on Q.MWOA vice GMWOA 

Droke on ZQ.YMI. vice UQ.YML 

Broke on MSDTZ v:f.ce MRPT'Z 

B~oke on TBZIX vice TBAIX 

Broke on AA vice BB 

Broke on JZGPS vice JZUPS 

Broke using trigrarih OCM 

Broke on WGPBX vice ~GPDX 

Bro~e on RTHIU vice RTHIQ 

Broke on AA vice BB 

Broke on FNRBD vice FNRBW 

Broke on ERLXS vice EI.RXS 

Broke on Af\1 rotor arrangement 

Broke on DJTMSC vice DNMNC 

Broke on BTEQU vice XIEQU 

Broke on RBSWE vice HBSWE 

MARCH 

-

2 

Broke on ELVNL vice ~VNL 

Broke on VLFVS vice VVFVS 

Broke on tcr.rTY vice KITJY 

Broke on AM rotor arrangement 

Broke on DNGOB vice DNGOH 

Broke on NZXSZ vice NRXSZ 

Broke on PVWWF vice PVWSF 

Broke on ORXTF v.ice OGXTF 

Broke on AM rotor arrangement 

Broke on AM rotor arrangement 

Broke on AM rotor arra.ngentent 

Broke on BOBGH vice BOMlH 

Broke on CUZLL vice CUZEL 

Broke on RGXBP vice RGXIP 

Broke on AEGFF vice AEBFF 

Added letter to message indicator 

Broke on CRQ.WQ vice CXQ.WQ 

Broke on GAQGV vice GA'l£P/ 

Broke on QMGBD vice Q,MGBE 

Broke using trigraph TDK 

'f0P BHlmff ee~ ~' '5-1226-.\ 

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VIOLATIONS (Cont'd) 

281716z 

291401Z 

310535z 

011245z 

01164cz 

19o63CZ 

2914100 

301415z 

010935z 

0115000 

0119000 

02o6ocz 

o60733z 

o61708z 

260225z 

24 MAR 

Incl. 1 

TRI GRAPH 

TBY 

TPC 

TKL 

YEF 

lFB 

ZBN 

AFC 

AJC 

AOK 

APV 

APU 

ARQ 

BEO 

BFW 

cux 

DAV 

AFJ 

KEY NO. 

6 

6 

3d 

5 

7a 

3c 

3d 

3d 

3d 

9 

7b 

3d 

3d 

3d 

3d 

3d 

10 

5 

USM-3 (Cont'd) 

MARCH (Cont'd) 

USM-4 

.. 

Broke using trigre.ph TDY 

Broke using trigre.ph TFC 

Broke on BCWXQ vice BCWXZ 

JANUARY 

Alignment UAWIP 

BrQke on BB vice CC 

BroKe on ALTJB vice ALTAB 

Broke on ERVGS vice ARVGS 

Broke on DQXOI vice DQXOD 

FEBRUJ~ 

MARCH 

~ 

MARCH 

Broke on AGJ'ND vice AJJND 

Message indicator derived using 

deciphering procedure 

Broke on AA vice 00 

Broke on MNZTU vice MBZTU 

Broke on NOGBW vice BOGBW 

Broke on CFYQK vice ABYQK 

Broke on PUXHQ vice PUXHD 

Broke on ZFUPV vice ZFUPN 

Operator error 

USM-7 

JANUARY 

3 

Alignment HVGOR 

'!GP SPBBE g~ #ss 1226 A 

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I 

.. • ':PeP Si;QRm 

VIOLATIONS (Conttd) 

D'm 

-

15 MAR 

20 MAR 

212230Z 

301525z 

08o84oz 

082130'Z 

09185oz 

17o615z 

190122Z 

2J.i.07ooz 

24o45CYZ 

110235Z 

150825z 

Incl 1 

TRI GRAPH 

PTQ 

GGK 

HOK 

HPN 

KEY NO. REMARKS 

10 

10 

11 

10 

8 

8 

8 

3d 

3d 

3d 

6 

3d 

3b 

USM-8 

MARCH 

Operator error 

Operator error 

USM-32 

~ 

Malf'unction or equipment 

USM-35 

JANUARY 

ABM. 

-

MARCH 

Maintenance man believed he was in 

local test position 

Use of multiswitch setting assigned 

in superseded key list 

Use of multiswitch setting assigned 

in superseded key list 

Use ot nn.tltiswitch setting assigned 

in superseded key list 

~ 

JANUARY 

Broke on PGFUO vice NGFUO 

Broke on MVHVZ vice MVHVS 

Broke on EFDVX vice EFDJX 

Broke using trigraph HNP 

FEBRUARY 

4 

Broke on ZGCNI vice ZGCNT 

Broke on UMGJN vice UMGJO 

'fOP SBEJM! 99111'mleh # SS ~:da J. 

PAGE 4 OF 8 PAGES 

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. . 

•••• . . . . . . . . ..... . 
' .. 

VIOLATIONS (Cont •a) 

151620Z 

210735z 

26115az 

o40810Z 

08o4ooz 

i617ooz 

241940Z 

242225z 

280317Z 

011835z 

071158z 

070754z 

072l22Z 

o81633z 

l20539Z 

130039'1. 

130215z 

i4o645z 

14o646Z 

17o417Z 

130227Z 

240856z 

301529Z 

100115z 

11 FEB 

llo601Z 

270015z 

Incl 1 

TRI GRAPH 

EMJ 

FIZ 

AW 

CAJ 

EEF 

GFQ 

GGK 

HRT 

AIE 

EZZ 

EJV 

FZS 

IUF 

JKC 

JMO 

KBL 

KIG 

MAM 

JMU 

Q,BP 

SYM 

EYS 

MPO 

KEY NO. 

3d 

2 

12 

3b 

3d 

6 

4 

3d 

3d 

3d. 

2 

3d 

10 

3c 

3d. 

3d 

3b 

3d 

3b 

3a 

3d 

9 

3c 

3a 

10 

4 

3d 

~(Cont'd) 

FEBRUARY (Cont'd) 

MARCH 

ASAFE 

Broke on OUGQQ vice OWCQQ 

Broke on AM rotor arrangement 

f'or 22 Fe'\> 

Use of AF'SAK 2674 

Broke on FERIK vice EERIK 

Broke on OMCJE vice ~JE 

Broke using trigraph'EFF 

Added letter to message indicator 

Broke on SJQ,KB vice SJQKR 

Broke on FJNWG vice PJIWL 

JANUARY 

Broke on RWVAY vice LWVAY 

10 messages broke on PM rotor 

arrangement 

Broke on JQZLH vice JQ.Zll1 

Clee.r text tape transmission 

Broke on Q,XCVQ vice QXCDQ 

Broke on ALUFD vice .ABUFD 

Broke on EKSTB vice MKETB 

Broke on TKYZZ vice TJYZZ 

Broke on CRZVI vice CRVZM 

Broke on GSEUX vice GSFUX 

Broke on VMIFW vice VMFLW 

Broke on WJHKV vice WJLKV 

Message indicator derived using 

deciphering procedure 

Broke on QDUSN vice QZUSN 

FEBRUARY 

Broke on RMQYL vice RMQLY 

Telephone conversation 

Omitted letter in message indicator 

Broke on WOYBN vice SOYBN 

!6f' fm:::M:'f Cow.rftOil /I 5,-i226=A 

PAGE 5 OF 8 PAGES 

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'f()p5 SECRET' 

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7 

1?0~di-t:ilfijjq8 OD'-.A•t.D. ·- '*1GP SEe~'f 

VIOT~TIONS (Gont'u) 

D'ro TRIGRAPil KEY 'NO, REMARKS - ASJ\.FE (Cont 'ii ) 

~-

090031Z CCB 3d l3rokP. on GMPl'Y vice GMSYY 

1200057.. DDS 3a Broke on I'7.'P'L.t vie~ IZJ.FI 

211402Z 2 Frolcc on ~M rotor a.'t'rangemcnt 27124-17, !CG 3d. Broke on YiYSR vice YLYSK 

280253z IDY 3d Broke on CFD.PG vice CSDPG 

2906457. IKF 3d Bt"oke on PWEVQ vice PHEVQ 

3011517. ITM 3d Broke on OHVUU vice OHVBU 

30J.749Z IYX 3d Broke on QZNirl. vice QZNMZ 

311525z JHK 3d Broke on NPPVO vice NPPYO 

ASA.t..L 

~ 

0921o6z AHQ 3b Broke on AUXTL vice AVX!'J:L 

09212az AHS 3d Broke on LDEQA vice EEF.Q,F 

201926z ASP 3d Broke on LLBIID vice LLBHO 

ASA.'W 

-

JANUARY 

112102Z 1 Reuse of rotor arrangement from 

DAPHNE key list 

J37TH CRC 

MARCH 

030145z 1 Reuse or rotor atTaneement and rotor ... alignment from DAPHNE key list . • . • . . ..... . . 201ST CRG . . 

• ... .. JA.l\111ARY 

1905cxv.. AFA 2 Broke on PM rotor arrange~ent .... . . . . . . . • 

FEBRUARY . . ..... . i702ll-iz AWA 4 Omitted letter in message indicator 

'rC:I!' ~EeflE'f 66Iffot1 fl "-1;S;Z6-A 

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' 

~. 

VIOLATI°l'fS (Cont'd) 

221241Z 

221955z 

2516l7Z 

252146z 

010125Z 

02134oz 

030024z 

o41050'l 

o41052z 

o41053z 

o41802z 

o419ogz 

05o600'l 

o61031Z 

o8ogo8z 

090942z 

101830'Z 

12o635z 

140148Z 

l4o651Z 

l60457Z 

l80o40Z 

i81248z 

190248z 

190355Z 

1914300 

20115oz 

201BJ.i.5z 

210016z 

210809z 

220448z 

220526z 

25023oz 

250232z 

25o835z 

252031Z 

262101Z 

Incl 1 

TRI GRAPH 

CRQ 

CYA 

DOR 

DPX 

ABB 

AHV 

Arn 

ART 

ARV 

ARZ 

AUQ 

AVQ 

BAI 

BFM 

OJF 

BRX 

BWS 

CIP 

DIP 

DKX 

DZE 

EOA 

ERT 

EYI 

EYR 

EZY 

FGL 

FHM 

FIW 

FLU 

NNI 

FNQ 

GCD 

GCF 

GEK 

GET 

G?-0: 

KEY NO. REMARKS 

2 

3d 

3b 

3b 

3d 

3d 

4 

2 

2 

2 

3d 

4 

2 

2 

3d 

3d 

3d 

3d 

3c 

3d 

3d 

3d 

6 

3d 

3d 

3d 

2 

3d 

3d 

3d 

3d 

3d 

9 

6 

3a 

3c 

3d 

501ST (Cont 'd) 

FEBRUARY (Cont'd) 

'MARCH 

Broke on AM rotor arrangement 

Broke on CYADZ vice CY.ADit 

Broke on ZMVZH vice ZMUZH 

Broke on c'.PRRc vice CQBRC 

Broke on ZGNAO vice ZGNAQ 

Broke on MVWKA vice MVWKK 

Ontj.tted letter in message indicator 

Broke on Pl4 rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor ar~angement 

Broke on QLHQ,P vice QDHQP 

Omitted letter in message indicator 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on IFQUW vice IFQUH 

Broke on XZEBU vice XZWBU 

Broke on SEWLZ vice AHWLZ 

Broke on GSFGK vice lIDFGK 

B1·oke on NJXOT vice NJXOP 

Broke on BKGDP vice BFGDP 

Broke on SLXQU vice SLXGU 

Broke on IPEEI vice IPGPG 

Broke using trigraph EPT 

Broke v:BWDH vice v:BIDE; 

Broke on YIKAF .vice YIKAR 

Broke on CENNZ vice LENNZ 

Broke on PM rotor arrangement 

Broke on CKSSD vice CWFSD 

Broke on PRTBX vice PUUBX 

Broke on KWUIR vice KWUTR 

Broke on SGKVK vice FGKVK 

Broke on JEGNS vice JEQNS 

Message indicator derived using 

deciphering procedure 

Broke using trigraph GCP 

Broke on HQYDE vice HG,DYE 

Broke on GPAGG vice GPAGC 

Broke on DMl'GC vice DMTGS 

!'ml B!l!Ml'.!! e6H'fROEi {f 5 5=1226 A 

PAGE 7 OF a PAGES 

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'!6F~ 

VIOLATIONS (Cont 'Cl) 

~ TRIGRAPH 

270132z GRI 

27072oz GOP 

27205az GSI 

2ao105z GWZ 

29o65CYZ RSU 

282208Z GXF 

290005z GXU 

291305Z BAO 

301734Z HBX 

31181.i.oz BLQ, 

11 JAN 

17 MAR 

Incl l 

T6PBQl~¥>1:n~ ..__, ~ '--'.I. t. ~ .._ 

KEY NO. REMARKS 

~OlST cRG (Cont'd) 

~(Cont'd) a 

3c Broke on DEXAI vice BEXAI 

3d Broke on XIHSF vice XIHUF 

3d Broke on AGQ;PJ vice APQPJ 

2 Broke on PM rotor arrangement 

6 Broke using trigraph GYU 

3d Broke on GWXGC vice GWOGC 

3d Broke on DONHX vice SONHX 

3d Broke on IUKQ,U vice !UWQU 

6 Broke using trigraph l1HB 

3c Brqke on RRRTG vice RRR'l'C 

SSO CAMP ZAMA 

JANUARY 

10 Operator believed he was on room 

circuit 

SSO CAMP DES LOGES 

~ 

10 Operator be1ieved be was on room 

circuit 

T019 S!X:'.ftft eetffRe:& f "-1226-A 

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"'· 

KEY LIST OF ARMY VIOLATIONS 

JAN., FEB., & MAR. 195z 

ROTOR ARRANGEMENT 

1. Use tor encipherment ot an inappropriate rotor arrangement and/or alignment. (Reference AFSAG 12621 para 5oo6a(l)( and/or AFSAG 1231:81 para 

6002a(2), and/or AFSAG 1231B1 para 6ooll.a(l)J 

2. Use at a rotor arrangement tor inaJ>F.Opriate ceyptoperiod, day or m~th. 

(Reference .AFSAG 1262, para 5oo6a(lJ) 

ROTOR ALIGNMENT AND MESSAGE INDICATOR 

3. Discrepancy between the message rotor alignment resulting trom decipherment ot the message indicator and the message rotor alignment actually 

required to decipher the message, •lthoue;h the latter ws.s correctly derived. The discrepanc7 involves (a) transposition ot letters, (b) substitution ot a letter alphabetically adjacent to the correct letter, 

(c) substitution ot a phonetically similar letter, or (d) errors in encipherment. 

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

5. Decipherment of the message indicator resulted in a message rotor alignment identical to the tinal aligmnent ot the previous message. (Reterence .AFSAG 1262, para 6002a(4)) 

KE! GROUP 

6. !J.'he trigraphic key-group indicator in the message indicator did not 

correspond to the key group actually used tor encipherment. Reuse ot a 

key group was not involved. (Reterence AFSAG 1262, para 5oo4.b) 

MACHINE DESIGNATOR AND MULTISWITCH SE'mRG 

T• The ma.chine designator in the message indicator did not corres;eond to the 

mu1tisw1tch setting used tor encipherment. The messages were (a) correctly 

enciphered or (b) incorrectly enciphered. (Ref'erence .AFSAG 1262, para 6002a(l)) 

8. Use ot an incorrect multiswitch setting. (Reterence .AFSAG 1262, para 

6002a(2)( aDd/or AFSAG 123lB, para 6003a(l), and/or AFSAG 1231B, para 

6002a(4)J 

ENCIPBER-mx:JIPHER CA'RD 

9. Incorrect use of' an ORCUS enciphering card to produce a message indicator. 

(Reference AFSAG 1262, para 5005c) 

Incl 2 CRYP'l'OCLEARANCE REQUIRED 

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10 .. 

u. 

12. 

Classifie4 intor111ation in the clear. 

Transmission of classified information in manoalphabetic substitution 

cipher. 

Use of an unauthorized crnt;oaystem to encipher COMift information. 

Transmission ot a message in 'Which there was fault7 rotor stepping 

4uring encipherment. (Reference AFSAG 126a, para 6002a(3)) 

Incl 2 

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. . ..... .