T6~DW'l1 .......... ~'-.A.I.t.~ ..... 

NATIONAL SECURITY AGENCY 

WASHINGTON 25, D. C. 

Serial: 376S 

1 June 1955 

St.m.rmT: Report ot Communications Security Vio;La.tions 

TO: Oonmnnder 

U. s. Air Force Security Service 

San Antonio, Texas. 

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

com,pilation of cormnunications ~ecurity violations reported to, or 

noted by, this Agency which occurred in communications of those Air 

Force stations which hand1e COMINT traffic. You have been furnished 

com,pleted evaluations of those cryptographic violations vhich were 

reported as possible com,promises. 

2. This report is furnished primarily tor guidance in improving 

the security of COMINT communications. Similar reports are forwarded · 

to Chief, Arary Security Agency and Chief of Naval Operations. Upon 

request, additional copies of this report will be provided in 

sui'ficient quantity for dissemination to those activities under your 

Command engaged in COMINT operations. 

3. Extracts from this quarterly summary may be classified 

SEDRET if the extracts are restricted to lists ot violations which 

involve messages classified no higher than BEURET. For example, 

the list of violations committed by an activity which originates messages classified no higher than SJOORET maybe extracted and forwarded 

• to that activity as S:OORET material. The key list is Sl!XlRET in 

classification. 

4. This correspondence maybe downgraded to Sl!XlRET upon ren.)Va.l 

,'of Inclosure 1. 

FOR THE DIRECTOR: 

2 Inals: 

C. M. MILLER, -~7 Major lK"GC: 

Asst. Adj. Gen. 

1. Co11111un1catione Security Violations 

by Air Force Stations {10) 

2. Key List of Air Force Violations (10) 

TOP 

eclassifi ed and a roved for r lease b NSA on 
• • 

cc: NSA Europe 

NSA United Kingdom 

NBA Far East 

NSA Alaska 

NSA Pe.c'ific 

AG 

c/s 

COMSEC (2) 

~~SST. .. 

PROD 

o6B 

411 

413 

Serial: .3768 

r June 1955 

M/R: This is e. compilation or communications security violations 

committed by Air Force stations during January, February, and March 195!h 

A similar report will be forwarded to Chief, ASA, and CNO. · USAFSS furnished 10 copies. Furnish each internal addressee a copy of Incl 1 and 2. 

M. M. Orris/4131~1/6r:'A.54/J.JM 

1

71( • t..fl'/-t • &,'/).• J; 

TO? M'l!Ml'f eeN'i':Rer_. 1it 55 lJ:SS-B_ 

PAGE 2 OF 2 PAGES 

COPY /0 OF /6- COPIES 

CRYPTOCLEARAflCE REQUIRED 

FOR A.PPENDED DOCUMENTS 

T0P SEeRET 
~Of s1~nE; 'fOJY~jft!flEJT COMMUNICATIONS SOOURITY VIOLATIONS BY AIR FORCE STATIONS 

DTG 

1321212'. 

02 JAN 

072035z 

160124z 

180005z 

i8Q945z 

io085oz 

081734z 

211420Z 

282330Z 

oB0717Z 

131442Z 

Incl l 

TRI GRAPH 

czz 

EVB 

ETZ 

BU' 

AHR 

AEG 

BNF 

ccs 

AIE 

BKT 

KEY NO, 

11 

11 

11 

3a 

3d 

3d 

2 

5 

3b 

3d 

13 

2 

6 

USJ\-33 

JANUARY 

USA-34. 

JANUARY 

FEBRUARY 

USA-3f\B 

JANUARY 

MARCH . 

USA-51 

JANUARY 

FEBRUARY 

MARCH 

REMARKS 

Operator believed he was on 

.room circuit 

Malfunction of equipment 

Keyboard operation 

Broke on DGVLI vice DVGLI 

Broke on G.:ryrnH .vice NJNHH 

Broke on CJWQL vice CJWQY 

Broke on PM rotor arrangement 

Omitted letter in message in· 

di ca tor 

Broke on FGID\fil vice GGHMD 

Broke on OZGFM vice OZYFM 

Random rotor overstepped at 

counter readings 059 and oG5 

Droke on PM rotor arrangement 

Broke using trigraph BKY 

!'et' SBeR:S'f 86!ffft9D /} 55 1188 A 

PAG'F.: 1 OF 8 PAGES 

COPY ~O O'F ~F; COFIES 

CRYPT LEARl\.NCE REQ"UrRED 

'FOP SE€RE'F 
i0P SEBRm 

VIOLl\'nONS (Cont'd) 

DTG 

-

161525z 

182335Z 

i9oo45z 

191945Z 

231255Z 

072315z 

141445Z 

171742Z 

201220Z 

2905ooz 

232352z 

252228Z 

01154oz 

031115z 

i72o45z 

25013lZ 

012105z 

23092oz 

231141Z 

25ll30Z 

29213oz 

Incl. l 

TRIGRAPH 

BRJ 

CDM 

CGU 

CIC 

BlV 

COP 

DAE 

EHC 

BUA 

DWF 

EXP 

AJV 

ELU 

GJL 

KEY Y.TO. RF.MARKS 

3d 

3d 

15 

3d 

2 

11 

2 

2 

3d 

5 

2 

3b 

3d 

11 

3a 

3d 

3d 

3d 

13 

14 

3b 

tJs/\-51 (Cont'd') 

MARCH (Cont'd ) 

USA-54 

JANUARY 

MARCH 

-

USA-5lt.K 

FEBRUARY 

MARCH 

-

USA-56 

JANUARY 

Broke ' on BPRDY vice BRRDY 

Broke on GPFZL vice GPFZV 

Reuae of segment of key tape 

Broke on PQUQX vice PQUOX 

Broke on AM rotor arrangement 

Clear text tape 

Broke on A.~ rotor arrangement 

Broke on AM rotor arrangement 

Broke on EILPK vice ELLPK 

Omitted letter in message in· 

dice.tor 

Broke on AM rotor arrangement 

'Broke on RX.CJD vice ~CJD 

Broke on. EOUJR vice EOUJD 

Clear text tape 

Broke on CXNBZ vice CNXBZ 

Broke on DHTKI vice DHOKI 

Broke on AAJUF vice AOJUF 

Broke on CJQZL vice CJQZG 

Random rotor "failed to step 

at counter rea.!fiii 913 

Cori·ect D'lU - 25163oz 

Broke on FUFMP vice FUFLP 

!'eP BERET eeJffR6fi *55 uas-.t. 

PAGE 2 OF 8 PAGES 

COPY ;J.O OF .;l.>- COPIES 

CRYPfOCLEARANCE RF.QUIRED 

T0P SEC:RET 
'Ee! Sfleml! 

VIOLATIONS (c~nt'd) 

DTG TRI GRAPH -

o411ooz AGT 

091415z ARZ 

211910Z CBA 

1813ooz CIF' 

28223oz 

122200'Z BPW 

160205z 

18o605z CLP 

211430Z CVP 

122108Z 

01111t-5z MM 

07203oz CZL 

132150Z FNS 

152135Z GBF 

i6184oz GIC 

22162oz IJE 

231247Z .lQS. 

232325z ISE 

JG:1:.e~~ JL'Z, 

3007 7Z JZU 

301310Z KAB 

Incl 1 

~01~~ EPi:i&~l-ii u~'---'•'-~ -1 

KEY NO. 

t1SA-26K 

JANUARY 

6 

3c 

5 

FEBRUARY 

3d 

13 

MARCH 

- 3d 

lit5 

3d 

USA 56L 

FEBRUARY 

11 

USA-27 

JANUARY 

3d 

5 

3c 

3b 

3d 

3d 

3a 

3d 

3d 

3d 

4 

REMAHKS 

Brok~ using trigraph AGO 

Broke on ADEEF vice AGEEF 

Omitted letter in message indi ca tor 

Broke on SYPJS vice UYOJY 

Random roto~ failed to step 

at counter reading 2302 

Broke on FPSYH vice FPSQH 

Correct D'l'G - 161205Z Omi~ted letter in message indi ca tor 

Broke on VCJVB vice VCTVB 

Operator believed he was transmitt!ng test tape 

Broke on XQQUO vice XQQYO 

Omitted letter in message indice.tor 

Broke on LOPPY vice LOPPI 

Broke on NHBLX vice NHALX 

Broke on DOAVE vice DOWVE 

Broke on D'NWQO vice DNTQ,O 

Broke on MNHSA vice MNSHA 

Broke on AQ.TNE vice FQ.TNE 

Broke on HSFEN vice CKFEl'J 

Broke on SCQA.L vice SOQ.4.L 

AlOO\BMPPUXP 

TOP eEeft!'l' eeff'fRen ti' 5 5-uaa-A 

PAGE 3 or S PAGES 

COPY .1 o OF ls- COPIES 

CRYPTOCLEAIW!CE REQUIRED 

TOP SE€RE'f 
'VIOIATIONS (Cont'd) 

DTG 

-

09o602z 

o81342z 

i2o84oz 

30144oz 

0503157, 

o82359Z 

091125z 

15083oz 

i6015oz 

230002Z 

010115z 

0217o8z 

021845z 

11014oz 

11135oz 

200055z 

091713~ 

no405z 

11o42oz 

11o44oz 

110738z 

120810Z 

120921Z 

121905Z 

28013oz 

29o44oz 

301210Z 

Incl 1 

TRI GRAPH 

BUT 

AW' 

BFE 

DQC 

AHN 

ATB 

ATO 

BPA 

DQV 

CTV 

AAA 

AKQ. 

ALL 

BTV 

BWM 

DQA. 

ATR 

AXY 

AXZ 

AYA 

AXO 

BAB 

BAM 

BAL 

BQO 

RRA 

BSN 

KEY NO. REMARKS 

3a 

3d 

3d 

10 

3c 

3d 

10 

3b 

10 

3a 

5 

3d 

3c 

3a 

3d 

3d 

3d 

2 

2 

2 

3a 

3d 

3d 

3c 

3d 

3d 

2 

f.JsA-51 (9ont'd1 

FEBRUARY 

MARCH 

-

USA-57I$ 

JANUARX 

FEBRUARY 

MARCH 

Broke on AZFIN vice AZIFN 

Broke on NYEET vice EYEET 

Broke on KDBTK vice QRBTK 

Message indicator derived using 

deciphering procedure 

Broke on 'l'GWPW vice PGWPW 

Broke on MUVUV vice MZVUV 

Message indicator derived using 

deciphering procedure 

Broke on PZDZC vice PYDZC 

Message indicator derived using 

deciphering procedure 

Broke on YRQUX vice RYQUX 

Omit~ed mschine designator 

Broke on ILtnrn vice IWQP 

Broke on HNVI;B vice HNVLZ 

Broke on VIX;'PF vice VDPGF 

Broke on INli'OD vice l.m'QS. 

Broke on,XQYQO vice XQYQU 

Broke on Q.~KTI vice Q.BBTI 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on ~tor arrangement 

Broke on RVSRG vice RVRSG 

Broke on QTMHG vice QXMHG 

Broke on QPNOP vice QPNOR 

Broke on EDGYR vice EDGIR 

Broke on JIRCQ vice JIRCW 

Broke on EXXZR vice URALU 

Broke on AM rotor arrangement 

qigp SEQml'!' 99N'l'R91:. # SS 1188 !. 

PAGE 4 OF S PAGES 

COPY ;.o OF J2 ,- COPIES 

CR~C REQUIRED 

TOI' SEC:RET 
Vl.Ol.ATIONS (Con'\;' d) 

301230Z 

301250Z 

o4 JAN 

14o455z 

2601ooz 

13 FEB 

200627Z 

202300Z 

220200Z 

251601Z 

2517ooz 

251720Z 

260152z 

26161oz 

28002oz 

03l.~30Z 

o4o458z 

o418ooz 

102218z 

160205z 

1B193oz 

2011t.3oz 

211402Z 

e61632z 

261728z 

3llo41Z 

25 MAR 

Incl l. 

TRI GRAPH 

BSQ 

BSS 

GGM 

GKA 

Gyz 

IEZ 

IEV 

IFU 

IXA 

IWQ 

JU' 

BOQ 

BWW 

CDC 

GNE 

IEP 

JBY 

JRR 

LEI 

PJM 

PKV 

QYB 

KEY NO. REMA.'RKS 

2 

2 

ll 

11 

12 

11 

3d 

3d 

3a 

2 

2 

2 

3a 

3d 

3d 

3d 

3d 

3b 

3d 

6 

3d 

3d 

3a 

3d 

3d 

3d 

12 

.·bsA-57tc [Cont '<il; 

!!!!Q!! (cont 'd.) 

USA-52 

JANUARY 

FEBRUA!JY 

MARCH 

-

Broke on AM rotor arrangement 

Broke on AM rotor arrangement 

Ke~board operation Keyboard operation 

AFSAK 2591 

Operator in "text" ·position· 

Broke on ZAMOW vice ZAWOt'1 

Broke on JXUTQ, vice JXUTO 

Broke on YSULT vice YSLUT 

Broke on AM rotor arrangement 

Broke on AM rotor arrangement 

Broke on AM rotor arrangement Broke on TJTLC vice TJL'ro 

Broke on KRGRM vice KR.ARM 

Broke on 'l'CJKG vice 'roJKQ 

Broke on TPWTM vice TPWAM 

Broke on UQFENvice UQVEN 

Broke on CWADP vice DWADP 

Broke on,TKEYR vice TKMYR 

Broke using trigraph IEQ 

Broke on UAGGQ vice UAGGY 

Broke on BLPtru vice BLPBU 

Broke on ESZDI vice ESDZI 

Broke on VQ?-ISE vice VQMFE 

Broke on KYKTE.vice KYKLE 

Broke on XKLGG vice XFLGG 

6900 SCTY GP 

MARCH 

5 

AFSAK 2700 

~ep B:Beft:B'f een1Ren*s'-11~8=A 

PAGE 5 OF 8 PAGES 

COPY ..to OF ,;..s: COPIES 

CR~LEARANCE REQUIRED 

TOP SECRET 
' l'e;p B!eftft 

tIOLATIONS (Cont'd) 

D'ro 

-

080900Z 

lo1711t.z 

151915Z 

160009Z 

160225Z 

1812olt.Z 

2501o6z 

27164lt.z 

290015z 

2915ooz 

021035z 

021ol!.4Z 

030705z 

030849Z 

03o851Z 

030855z 

03o859Z 

030917Z 

031015Z 

031030Z 

o411ooz 

01oa2oz 

121230Z 

l21230Z 

121230Z 

121230Z 

121230Z 

l21230Z 

130120Z 

ilt.o635z 

170920Z 

171223Z 

19o6l2Z 

os~ooz 

o4o622Z 

Incl 1 

TRIGRAPH 

BGH 

CAV 

DU:: 

DWJ 

xwv 

EIO 

FWD 

HLZ 

IGT 

!OF 

AHI 

ARD 

ALA 

AKI 

AKY 

AKL 

AKV 

BSB 

BSJ 

BST 

BTN 

B'M 

BRZ 

CBX 

CTH 

CTV 

DNB 

KEY NO. 

2 

3d 

3d 

3d 

10 

3d: 

3d 

8s 

13 

3c 

2 

2 

2 

2 

2 

2 

2 

2 

2 

2 

2 

2 

8b 

8b 

8b 

8b 

8b 

8b 

11 

3b 

8s 

3a 

& 

2 

11 

6910 SC'.11' G~ 

JANUARY 

FEBRUARY 

MARCH 

-

Broke on PM rotor arrangement 

Broke on HKEUJ vice HKEIS 

Broke on EZWQV vice EZWYV 

Broke on WAYRM vice BAYRM Mes~age indicator derived using 

deciphering procedure 

Broke on QMOAC vice QMOOC 

Broke on FYYKJ vice FYYKS 

Broke on BB vice AA 

Rand.om rotor tailed to step at 

counter reading 179 

Broke on FKIRA vice FKYRA 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor arrangement 

Broke on PM rotor art"a~emen-t 

Broke OD CC vice 'BB 

Broke OD cc vice BB 

Broke on.CC vice BB 

Broke on CC vice BB 

Broke on CC vice BB 

Broke on CC vice BB -~ard operation 

Broke on CFVYO vice CEVYO 

Broke on AA vice BBi 

Broke IYBMZ vice IYMBZ 

Broke on BB vice AA 

Broke on PM rotor arrangement 

Keyboard operation 

T01' s:r.eim.r ee!fmen {f '5wil99 " 

PAGE 6 OF 6 PAGES 

COPY J o OF >-J' COPIES 

CRYP.rOCLEARANCE REQUlRED 

TO~ SECRE'f 
• '!Of BEeRffl' 

VIOIATIO:NS (Cont'd) 

).Oloo6Z 

132012z 

16181J.5z 

160034z 

171255z 

191212z 

241615z 

27101m 

311200'Z 

28233cz 

132255Z 

220715z 

17 FEB 

192255z 

240726z 

242114Z 

101700'Z 

Incl 1 

TR!GRAPII 

FQB 

GXS 

IBB 

IBM 

IGG 

JFH 

KRW 

ISQ 

KEY NO. 

10 

3d 

3c 

2 

7 

3d 

3d 

3a 

2 

13 

11 

11 

11 

11 

11 

11 

12 

9 

6910 SCTY GP (Cont'd) 

MARCH (Cont'd.) 

Mess'age indicator derived using 

deciphering procedure 

Broke on IXlFJ vice IJYFJ 

Broke on XWKP vice XJ...C103 

Broke:on PM rotor arrangement 

Key· group previously used for ' 

17o644z 

Broke on EXCJA vice EXOJY 

Broke on AVIHD vice AVl1iJJ 

Broke on ~VW vice MQVBW 

Broke on PM rotor arrangement 

6950 scm GP 

FEBRUARY 

Random rotor overstepped at counter 

readings 58 and 64 

6g61ST COMM SS 

JANUARY 

FEBRUARY 

MARCH 

-

Keyboard operation 

Keyboard operation 

Operator believed he wa.s on room 

circuit 

Keyboard'operation 

Keyboard operation 

Operator inadvertentl7hit magnet 

armature 

AFSAK 2700 

3RD WEATHER GP ENT AFB 

FEBRUARY 

Incorrect multiswitch setting. __ _ 

Z..1235 

~ Bft'!H!l'f 06H'fftefJ f :55=il88=A 

PAGE 7 ,OF · 8 PAGES 

COPY .:J. o OF Ji .r: COPIES TOP 15 EERMi.KWNCEltEQtTIRED 
• 

"leP SJiEJi!E 

'VI.O'IA'?I.ONG (Cont t d) 

D'.ro TRI GRAPH -

09 FEB 

KEY NO. 

11 

AWS. Wttwm 

FEBRUJU\Y 

Operator believed he was on room 

circuit 

SPECIAL OPERATING CENTER, TOKYO 

JANUARY 

o1J.2033z 

Incl 1 

1' 

FEBRUARY 

1 

Arrangement previously used for 

28193oz 

Arrangement previously used for 

020130'Z 

~p SilS~Ql SQ}ll§,QL If~ i99 A 

PAGE B OF $ n:l 

COPY ,;. o OF ¢ f= COPIE5 

CRYPl'OCLEARANCE REQUIRED 

T()~ SEERE'F 
.. 

--sit!!etti!1F 2 

KEY LIST OF AIR FORCE VIOI..A.TIONS 

Jan. 1 Feb., & Mar., 1955_ 

ROTOR ARRANGEMEifr 

1. Use for encipherment ot a.n incorrect rotor e.rrangen1ent and/or alignment. 

(Reference AFSAG 12621 para 5oo6e.(l), and/or AFSAG l231B1 para 6002a(2)1 

and/or AFSAG l231B1' para 6oo4a(l) ) 

2. Use of a rotor arraDgement tor an ina~pro~riate cl'1Ptoperio~, daJ or 

month. (Reference AFSAG 1262, para 5oo6a(l) } 

ROTOR ALIGNMENT AND MESSAGE INDICATOR 

3. Discrepancy between the message rotor alignment resulting ~rom decipherment of the message indicator and the message rotor alignment actually 

required to decipher the message, although the latter was correctly derived. 

The discrepancy involves (a) transposition of letters, (b) sub•titution 

of a letter alphabetically adjacent to 'the correct letter, (c) substitution of a phonetically similar letter, or (d) errors in en"ipherm~nt. 

4. Identical message indicators appeared on different messages (or transmission sections) enciphered on the same ma.chine. Use of the message rotor 

alignment resulting from decipherment of the message indicator allowed de· 

cipherment of the first but not the second message. The message rotor 

alignment actually used for encipherment of tbe second message was properly 

tailed to the final alignment ot the first message. 

5. Omission or addition or one or more letters to the message indicator. 

KEY GROUP 

6. The trigraphic key-group indic~tor in the mesRage indicator did not 

correspond to the key group actually used for encipherrnP.nt. Reuse of a 

key group was not involved. (Rr.af'err>nce flFctAG 1262, para 51"~b) 

7• Reuse ot a key-gr""1p ~01· c~ciDherment. (Referehce AFSAG l~G?, para 6002b(4) ) 

MACHINE DESIGNATO!l l\ND MULTISWITCH SETTil'TG 

8. The machine designator in the message indicator did not cort"espond to the 

multiswitch setting used tor enciphP.t"ment. The messages were (g.) correctly 

enciphered or (b) incorrectly enciphered. (Reference AFSAG 1262, para 6002a(l) ) 

9. Use of' ~n incorrect multiswit~h ~ettin~. (Reference AFSAG 1262, para 6002~(2), a.ml/or AFSAG 1231.B, vnra. 60036.(1}1 and/or AFSAG 1231B, para. 6002a.(4) ) 

ENCIPHl!:R-DF.CII'IIER CARD 

10. Incorrect use of an ORCUS encipherina card to produce a message indicator. 

(Reference AFSAG 12621 para 5005c) 

Incl 2 CR.YPTOCLE..~NCm REQTJIRED 

SE€RET 
t • • ~ .. 

• -S'ECRET 

ADDITIONAL VIOLAT'!Oli:J 

11. Classified ini'ormn.tion in the cl.ear 

12. Use or a.n una.utl1ot'ized cryptosystem' +.9 Pncipher COMINT infornin.tion. 

13. Transmission or a messe.ae in which there was fault~ rotor et~ppins 

n11ring cncipherment. (Reference AFSAG 12621 pa'ra. 6002a{3) ) 

14. Transmission or a message containing an incorrect date-time group. 

15. Reuse or one-time key tape ror enc1pherment • 

Incl 2 CRYPTOCLEARAUCJ~ RW.lUIRED 

2 

SE<:RE'f