NSIST
@nsistuk.bsky.social
National Signals Intelligence and Security Trust (www.nsist.org)
Perspective sketches of the operational buildings dotted around the WOYG (War Office Y Group) site, disguised as Estate buildings at Beaumanor Hall in Leicestershire. They were disguised to avoid Luftwaffe reconnaissance flights during the Second World War.
August 31, 2025 at 2:23 PM
Perspective sketches of the operational buildings dotted around the WOYG (War Office Y Group) site, disguised as Estate buildings at Beaumanor Hall in Leicestershire. They were disguised to avoid Luftwaffe reconnaissance flights during the Second World War.
Site plans for the Whitchurch Y station in Shropshire
August 31, 2025 at 2:16 PM
Site plans for the Whitchurch Y station in Shropshire
The RSS (Radio Security Service) was formed around December 1939 at Wormwood Scrubs. But prior to this the GPO and the War Office had been taking steps to provide the means of identifying illicit wireless transmissions from early 1938.
The attached is from a GPO War Diary.
The attached is from a GPO War Diary.
August 31, 2025 at 1:52 PM
The RSS (Radio Security Service) was formed around December 1939 at Wormwood Scrubs. But prior to this the GPO and the War Office had been taking steps to provide the means of identifying illicit wireless transmissions from early 1938.
The attached is from a GPO War Diary.
The attached is from a GPO War Diary.
NSIST is kindly sponsored by BAE Systems....BAE Systems provides some of the world's most advanced, technology-led defence, aerospace and security solutions, helping its customers stay ahead of evolving threats across land, sea, air, cyber and space.
June 15, 2025 at 2:03 PM
NSIST is kindly sponsored by BAE Systems....BAE Systems provides some of the world's most advanced, technology-led defence, aerospace and security solutions, helping its customers stay ahead of evolving threats across land, sea, air, cyber and space.
The (un)official logo for the WOYG (War Office Y Group) at Beaumanor Hall during the Second World War
June 14, 2025 at 2:04 PM
The (un)official logo for the WOYG (War Office Y Group) at Beaumanor Hall during the Second World War
This is Beaumanor Hall in Leicestershire, home of the WOYG (War Office Y Group) and one of the main Army SIGINT hubs of the Second World War
June 12, 2025 at 9:57 PM
This is Beaumanor Hall in Leicestershire, home of the WOYG (War Office Y Group) and one of the main Army SIGINT hubs of the Second World War
Graphic showing the War Office Y Group (WOYG) High Frequency (HF) Direction (DF) network
June 3, 2025 at 6:52 PM
Graphic showing the War Office Y Group (WOYG) High Frequency (HF) Direction (DF) network
Manual intercept operator, on duty with the War Office Y Group (WOYG) during the Second World War (from HW41/119)
May 29, 2025 at 3:14 PM
Manual intercept operator, on duty with the War Office Y Group (WOYG) during the Second World War (from HW41/119)
Reposted by NSIST
Julia Parsons, a U.S. Navy code breaker during World War II who was among the last survivors of a top-secret team of women that unscrambled messages to and from German U-boats, has died at 104.
Julia Parsons, U.S. Navy Code Breaker During World War II, Dies at 104
Soon after her officer training in Washington, she was recruited to a classified code-breaking team. She kept her work secret for decades, even from her family.
www.nytimes.com
May 1, 2025 at 3:21 AM
Julia Parsons, a U.S. Navy code breaker during World War II who was among the last survivors of a top-secret team of women that unscrambled messages to and from German U-boats, has died at 104.
spyscape.com
Coming soon....Spyscape is opening its doors in London (Covent Garden), at the end of May 2025
Coming soon....Spyscape is opening its doors in London (Covent Garden), at the end of May 2025
SPYSCAPE | The #1 Rated Museum & Experiences
Explore secrets, break codes, spot lies, and run surveillance as you reveal your unique skills and attributes profile at SPYSCAPE. Book now!
spyscape.com
April 24, 2025 at 3:54 PM
spyscape.com
Coming soon....Spyscape is opening its doors in London (Covent Garden), at the end of May 2025
Coming soon....Spyscape is opening its doors in London (Covent Garden), at the end of May 2025
Reposted by NSIST
New journal: The Journal of Applied Operational Intelligence is now out. Nine peer-reviewed articles are free to access via www.ubplj.org/index.php/jaoi
Thank you to i2 for its kind sponsorship that ensures free access to readers👏👏
Thank you to i2 for its kind sponsorship that ensures free access to readers👏👏
Journal of Applied Operational Intelligence
www.ubplj.org
March 13, 2025 at 1:21 PM
New journal: The Journal of Applied Operational Intelligence is now out. Nine peer-reviewed articles are free to access via www.ubplj.org/index.php/jaoi
Thank you to i2 for its kind sponsorship that ensures free access to readers👏👏
Thank you to i2 for its kind sponsorship that ensures free access to readers👏👏
The all new 'The_Age_of_AI' exhibition is now open at Bletchley Park
February 7, 2025 at 6:00 PM
The all new 'The_Age_of_AI' exhibition is now open at Bletchley Park
Reposted by NSIST
In the late 1920s, Soviet intelligence launched an effort to learn the tradecraft of foreign secret services.
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
“Instructive, valuable and useful”: Soviet Intelligence Learns from German World War I experience in HUMINT
In the late 1920s, Soviet intelligence launched an effort to learn the tradecraft of foreign secret services. Among the key facilitators of this process was Konstantin Zvonariov, a Latvian communis...
www.tandfonline.com
January 17, 2025 at 8:19 PM
In the late 1920s, Soviet intelligence launched an effort to learn the tradecraft of foreign secret services.
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
Reposted by NSIST
Some first thoughts on what newly released MI5 files on John Cairncross tell us about his time as a Soviet agent at Bletchley Park available at siginthistorian.blogspot.com. Some new detail, but there's nothing particularly spectacular.
January 20, 2025 at 3:09 PM
Some first thoughts on what newly released MI5 files on John Cairncross tell us about his time as a Soviet agent at Bletchley Park available at siginthistorian.blogspot.com. Some new detail, but there's nothing particularly spectacular.
Coming soon to TNA Kew....
January 16, 2025 at 9:23 AM
Coming soon to TNA Kew....
For over a decade, George Busby has become a specialist in the work of the Radio Security Service at the Gilnahirk Wireless Station in Northern Ireland, during the Second World War. The talk is on 20 March. Tickets are at:
www.niwarmemorial.org/events/north...
www.niwarmemorial.org/events/north...
January 14, 2025 at 1:57 PM
For over a decade, George Busby has become a specialist in the work of the Radio Security Service at the Gilnahirk Wireless Station in Northern Ireland, during the Second World War. The talk is on 20 March. Tickets are at:
www.niwarmemorial.org/events/north...
www.niwarmemorial.org/events/north...
Reposted by NSIST
John Young has made public on Cryptome a number of declassified NSA TEMPEST and COMSEC guides and policy notes.
2024-041.7z NSA Releases 49 Declassified Documents on Cryptography, December 31, 2024 (50MB). Link to ZIP archive.
cryptome.org/2024/12/NSA-...
2024-041.7z NSA Releases 49 Declassified Documents on Cryptography, December 31, 2024 (50MB). Link to ZIP archive.
cryptome.org/2024/12/NSA-...
cryptome.org
January 5, 2025 at 11:24 AM
John Young has made public on Cryptome a number of declassified NSA TEMPEST and COMSEC guides and policy notes.
2024-041.7z NSA Releases 49 Declassified Documents on Cryptography, December 31, 2024 (50MB). Link to ZIP archive.
cryptome.org/2024/12/NSA-...
2024-041.7z NSA Releases 49 Declassified Documents on Cryptography, December 31, 2024 (50MB). Link to ZIP archive.
cryptome.org/2024/12/NSA-...
The UK has some of the oldest and richest signals intelligence (SIGINT), cyber and communications security heritage in the world. NSIST has been established to preserve it - to protect the past for future generations to inform, research and enjoy. Please check out our website at www.nsist.org
January 11, 2025 at 1:11 PM
The UK has some of the oldest and richest signals intelligence (SIGINT), cyber and communications security heritage in the world. NSIST has been established to preserve it - to protect the past for future generations to inform, research and enjoy. Please check out our website at www.nsist.org