Premium

20.500.12592/cgthdz

'C', Chief of the Secret Intelligence Service (SIS): Secrecy of CX (Intelligence) and Y (Signals Intelligence) Messages

11 Jan 1940

A file of correspondence and intercepted communications concerning breaches of security. The documents include several letters warning about cavalier treatment of confidential sources of information, posing a threat to their existence, and several more complaining about similar behaviour regarding classified documents. The file also contains a copy of an intercepted telegram sent to Tokyo in 1940 by the Japanese ambassador in Cairo, giving information about Anglo-French strategy in the Mediterranean gleaned from conversations with senior generals, along with British orders restricting conversations with Japanese diplomatic personnel.
india security bolivia turkey france egypt iraq syria bulgaria germany russia great britain palestine surveillance second world war military intelligence secret intelligence service secrecy intelligence gathering informants leakage of information foreign office intelligence organization alexander cadogan ministry of economic warfare communications interception gladwyn jebb horace wilson government code and cypher school patrick reilly permanent under-secretary's department classified documents
Collection ID
FO1093
Conflict
Second World War
Countries
Bolivia Bulgaria Egypt France Germany Great Britain India Iraq Palestine Russia Syria Turkey
Document Reference
FO 1093/310/2
Document Types
Correspondence Intelligence Report
File Reference
FO 1093/310
Identifier
10.1080/swwf.fo1093.0310.002
Keywords
Secrecy Informants Intelligence Gathering Security Classified Documents Military Intelligence Communications Interception Leakage Of Information
Languages
English
Organizations
Foreign Office Government Code and Cypher School Ministry of Economic Warfare Permanent Under-Secretary's Department Secret Intelligence Service
Pages
27
Persons Discussed
Alexander Cadogan Gladwyn Jebb Patrick Reilly Horace Wilson
Published in
United Kingdom
Themes
Intelligence Organization Surveillance

Related Topics

All