NATIONAL SECURITY AGENCY 

WASHINGTON 25. D. C. 

. i '.l : 11111 

~OP 689R:E'f 

SUBJECT: Report of. Corranunications Security Violations 

TO: Chier of naval Operations (OP-30) 

The Pentagon 

23 Feb 55 

1. Attached is the quarterly (October through December 1954) 

compilation of communications security violo.tionG reported to or 

noted by this Agency which occurred in communications of those 

No.vy sto.tionG which handle COMI.UT traffic. You have been notified 

of completed evaluations of possible compromises which are reported 

herein as violations. 

2. This report is furnished primarily for guidance in 

improvine the security of COMINT communications. Similar reports 

are forwarded to Chief, Army Security Agency, and Conunander1 U.S. 

Air Force Security Service. Upon request, additional copies of 

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

operations. 

3. Extracts rrom this quarterly summary may be c1assified 

SECRET if the extracts 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 

messaees classified no higher than SECRET may b~ extracted and 

rorwarded to that activity as SECRET material. The key list is 

SECRET in classification. 

4. This correspondence may be downgraded to SECRET upon 

rcmov~l of Inclosurc 1. 

FOR THE DIRECTOR: 

E. M. Gibson 

Lt. Col.,AGC 

Assistant A(j. Gen. 

Declassified and approved for release by NSA on 05-15-2014 pursuantto E .0. 1352a 

2 Incls: 

1. Communico.tion::; Security Violations 

by r!o.vy Station::;. 

2. Key I.fat of' IJavy Violations. 

Cr:>py rurni:;he:cl: 

cr:o (OP-JCG) 
'i9P SEeRM'f . cc: NSA. Europe 

NSA United Kingdom 

NSA Far F.ast 

NSA Alaska 

NSA Pacific 

AG 

c/s 

COMSEC U:._' 

S/ASS~ 

COM 

PROD 

o6B 

411 

413 

3erial:1141 

23 Feb 55 

M/R: This is a compilation of communications security violations committed 

by Navy COMINT stations during October, November, and December 1954. A 

similar report will be forwarded to Chief, ASA, and CO~R, USAFSS. 

I 

TOP .,rr.CI\f.T eOU':ffiOL ,y 550415-A 

Pi\.GJ•: 1 OF 1 PAGF'S 

COPY '11 OI~ 16 COPIF.S 

T 0 p s E c R jtYf ?1.ftJMMJf~rlf-D 
-rtff-1 Si~!=:~~~ 9); (} p RJ~E]A~~~ ...., .AJ ~ .L" ..: 

crn.n~ITCJ\.'l'TOH:J Gr.clJHI'lr{ \'TOL.vrrorm BY NAVY STJ\.TIONG 

DTG TRIGRAPH KEY NO. Rl~MARKS 

USN-11 

OCTOBER 

150500Z PFF ~a Broke on BB vice AA 

201722Z QAJ 2d Broke on YCDNH vice YCDNO 

26105oz QWD 5~ Broke on CC vice DD 

NOVEMBER 

020941Z RUV 2d Broke r..;:: FFQRG vice FFGRG 

USN-18 

NOVEMBER 

0319ooz AAY aa Broke on LEBGS vice ~BS 

230220Z AOF 2a Broke on JXSNQ vice JSXNQ 

...me EMBER 

012005z ACI 2d Broke on QATKJ vice QAKTJ 

o42109Z AIIJ 4 Broke using trigraph AIJ 

26005oz 3 Broke on LJDZN v~~e LJZDN 

USN-19 

OCTOBER 

052115z BEC 2d BrQke on UXLGB vice UXCGB 

1oo805z CHT 2c Broke on QllVAQ vice OVPAQ 

NOVEMBER 

0!30207Z AET 2d Broke on JAQJS vice JA~ 

221a25z CYS 2a Broke on CIUVR vice CIVUR 

USN-20 

DECEMBER 

100210Z AIR 5a Broke on BB vice AA 

10023oz ALW 5a Broke on BB vice AA 

100240Z AMA 5a Broke on BB vice AA 

1003ooz AMC 5a Broke on BB vice AA 

Te>fl ~H!fi:E'f eetl'fRor:. H 550415-B 

PAGE 1 OF 2 PAGES 

Incl 1 TOP 

COPY ff OF ~ COPIES . 

S E C W'11'f'Ftt1~\~5f ~m• 
1tJ± j • _\ : •• 'J' 

VIOLATIONS (Cont'd) 

nm 

180001Z 

300916z 

211111Z 

Incl 1 

TRI GRAPH 

DJY 

FIJ 

DZL 

KEY NO. REMARKS 

l 

TOP 

USN-27 

NOVEMBER 

-DECEMBER 

Broke on BB vice AA 

Broke using trigraph FLA 

Broke o~ PM rotor arrangement 

'l'9P S~ QQNi'RQL ff ~50415-B 

PAGE 2 OF 2 PAGES 

COPY /& OF COPIES 

2 tftifibt'll;;D SECRET . 
_..I ·n ... ,' 

... October, nuvcJrb2r, P· D.'cc!mhc r 1 1'.))I~ 

HO'l'OH A~HJ\HGF.:tir·:fJ'r 

l. Use of a rotor·arrangcmcnt for un in::i.ppropriate cryptoperiod, 

da.y, or month. (Reference AFSAG 1262, para 5oo6a(l)) 

ROTOR ALIGNMf;NT AND MESSAr.B TNDICATOR 

2. Discrepancy between the message rotor ali~nment resulting from 

decipherment of the message indicator and the message rotor alignment actually requireq to decipher the message, although the 

latter was correctly derived. The discrepancy involves (a) 

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

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

3. Failure to tail ~re~iousiy enciphered message. 

1262, para 6002al~) 

KEY GROUP 

(Reference AFSAG 

4. 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 50o4b) 

MACHINE DESlQNATOR AND MULTISWITCH SETTING 

5. The machine designator in the message indicator did not correspond 

to the multiswitch setting used for encipherment. The messages 

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

(Reference AFSAG 1262, pa.~a 6002a(l)) 

J.nc.L ~ 

SE€RET 

'.