Explore upcoming events from across the Foundation – See Calendar

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X

About Us

About Us

Advancing cybersecurity awareness, education, and innovation for a safer digital world.

Our Team

Meet the leaders and visionaries driving the NCF's mission forward every day.

FAQs

Find quick answers about our mission, membership, and how to get involved.

Our History

From codebreakers to cyber defenders — preserving a legacy that shapes the future.

NCF Financial Data

Review audited reports and filings that reflect our commitment to transparency, accountability, and responsible stewardship.

Newsletter Archive

Browse past issues of our e-newsletter and explore our early years through issues of the Foundation’s original hard-copy newsletter, The Link.

Our Partnerships

Dedicated and talented organizations that have provided invaluable assistance to the NCF to help us achieve our goals. 

nav about us group of professionals in conversation

More Than a Mission — A Movement

The NCF brings together educators, experts, and enthusiasts who believe in building an informed, cyber-safe future.

Programs & Events

All Programs

Explore all of the NCF's programs driving cyber awareness, education, and history forward.

Escape Room

Hands-on puzzle challenge: crack codes, solve clues, experience real-time cryptologic logic.

Convening to Act

Catalyzing strategic dialogue on emerging cyber & cryptologic challenges in partnership with NSA.

Cocktails & Codebreakers

A celebratory evening honoring cryptologic legacy, networking, and thought leadership.

Crypto Cup

A signature fundraiser merging sport and mission — advancing cryptologic education through golf.

Cryptologic History Symposium

An academic event that explores the role of cryptology across eras and its lasting influence on security, strategy, and society.

Student Ambassador Program

Catalyzing strategic dialogue on emerging cyber & cryptologic challnges in partnership with NSA

Cyber Saturday

A full-day, interactive event for youth and families to explore cybersecurity through play.

Cyber Feud

A live, fast paced competition where students test cyber knowledge in game show format.

Maryland History Day

Highlighting student research on cryptology's impact across Maryland's past.

nav programs and events three students learning together

Events That Build a Cyber-Safe Future

The NCF programs spark growth, foster collaboration, and make cybersecurity a shared mission across generations and industries.

Resources

Podcast Series

Listen to #CyberChats and Cyber Pulse — the NCF's two podcasts exploring stories, insights, and innovations shaping cybersecurity.

Cyber Games

Engaging students through interactive challenges that build real-world cybersecurity skills and teamwork.

Downloads

Access classroom-ready lessons, tools, and activities to teach cryptology, cybersecurity, and digital citizenship.

Insights & Updates

Explore thought leadership, event recaps, and the latest news from the world of cryptology and cyber education.

Outsmart Cyberthreats Collections

Clear, engaging resources that build foundational cyber safety skills through activities and practical guidance.

Cybersecurity Curriculum Guidelines

Guidelines that support creating cybersecurity-focused lessons and inspire students to pursue cyber careers.

How to Be Cyber Safe + Savvy — A Data Care Booklet for Adults

Clear, practical steps to protect their devices, data, and privacy from today's online threats.

nav resources two young students learning on laptop

Empowering the Next Generation of Cyber Thinkers

Through resources, stories, and shared knowledge, the NCF helps educators, professionals, and students strengthen our cyber future together.

Cryptologic History

Trailblazers

Discover the pioneers who broke barriers and paved the way for future generations in cryptology.

Historical Figures in Cryptology

Meet the brilliant minds whose work in codes and communication shaped global history.

Cryptologic Bytes

Dive into quick reads and fascinating facts that reveal hidden history of code communication.

Commemorate

Honor the people and achievements that advanced the art and science of cryptology.

Acquisitions Archive

Explore rare artifacts, documents, and exhibits preserved to tell the evolving story of cryptology.

NSA/CSS Cryptologic Hall of Honor

Celebrate individuals whose exceptional contributions strengthened our nation's intelligence security.

nav cryptologic history hands using engima machine

Preserving the Code of Our Past

From hidden messages to historic breakthroughs, the NCF keeps the stories of cryptology alive—honoring the people, events, and innovations that shaped modern intelligence.

Explore upcoming events from across the Foundation – See Calendar

About Us

About Us

About Us

Advancing cybersecurity awareness, education, and innovation for a safer digital world.

Our Team

Meet the leaders and visionaries driving the NCF's mission forward every day.

FAQs

Find quick answers about our mission, membership, and how to get involved.

Our History

From codebreakers to cyber defenders — preserving a legacy that shapes the future.

NCF Financial Data

Review audited reports and filings that reflect our commitment to transparency, accountability, and responsible stewardship.

Newsletter Archive

Browse past issues of our e-newsletter and explore our early years through issues of the Foundation’s original hard-copy newsletter, The Link.

Our Partnerships

Dedicated and talented organizations that have provided invaluable assistance to the NCF to help us achieve our goals. 

nav about us group of professionals in conversation

More Than a Mission — A Movement

The NCF brings together educators, experts, and enthusiasts who believe in building an informed, cyber-safe future.

Programs & Events

Programs & Events

All Programs

Explore all of the NCF's programs driving cyber awareness, education, and history forward.

Escape Room

Hands-on puzzle challenge: crack codes, solve clues, experience real-time cryptologic logic.

Convening to Act

Catalyzing strategic dialogue on emerging cyber & cryptologic challenges in partnership with NSA.

Cocktails & Codebreakers

A celebratory evening honoring cryptologic legacy, networking, and thought leadership.

Crypto Cup

A signature fundraiser merging sport and mission — advancing cryptologic education through golf.

Cryptologic History Symposium

An academic event that explores the role of cryptology across eras and its lasting influence on security, strategy, and society.

Student Ambassador Program

Catalyzing strategic dialogue on emerging cyber & cryptologic challnges in partnership with NSA

Cyber Saturday

A full-day, interactive event for youth and families to explore cybersecurity through play.

Cyber Feud

A live, fast paced competition where students test cyber knowledge in game show format.

Maryland History Day

Highlighting student research on cryptology's impact across Maryland's past.

nav programs and events three students learning together

Events That Build a Cyber-Safe Future

The NCF programs spark growth, foster collaboration, and make cybersecurity a shared mission across generations and industries.

Resources Code

Resources

Podcast Series

Listen to #CyberChats and Cyber Pulse — the NCF's two podcasts exploring stories, insights, and innovations shaping cybersecurity.

Cyber Games

Engaging students through interactive challenges that build real-world cybersecurity skills and teamwork.

Downloads

Access classroom-ready lessons, tools, and activities to teach cryptology, cybersecurity, and digital citizenship.

Insights & Updates

Explore thought leadership, event recaps, and the latest news from the world of cryptology and cyber education.

Outsmart Cyberthreats Collections

Clear, engaging resources that build foundational cyber safety skills through activities and practical guidance.

Cybersecurity Curriculum Guidelines

Guidelines that support creating cybersecurity-focused lessons and inspire students to pursue cyber careers.

How to Be Cyber Safe + Savvy — A Data Care Booklet for Adults

Clear, practical steps to protect their devices, data, and privacy from today's online threats.

nav resources two young students learning on laptop

Empowering the Next Generation of Cyber Thinkers

Through resources, stories, and shared knowledge, the NCF helps educators, professionals, and students strengthen our cyber future together.

Cryptologic History

Cryptologic History

Trailblazers

Discover the pioneers who broke barriers and paved the way for future generations in cryptology.

Historical Figures in Cryptology

Meet the brilliant minds whose work in codes and communication shaped global history.

Cryptologic Bytes

Dive into quick reads and fascinating facts that reveal hidden history of code communication.

Commemorate

Honor the people and achievements that advanced the art and science of cryptology.

Acquisitions Archive

Explore rare artifacts, documents, and exhibits preserved to tell the evolving story of cryptology.

NSA/CSS Cryptologic Hall of Honor

Celebrate individuals whose exceptional contributions strengthened our nation's intelligence security.

nav cryptologic history hands using engima machine

Preserving the Code of Our Past

From hidden messages to historic breakthroughs, the NCF keeps the stories of cryptology alive—honoring the people, events, and innovations that shaped modern intelligence.

Rare letter signed by Herbert O. Yardley
Cryptologic History:

Rare Yardley Letter

Donated By: Private Seller

Year Donated: 2014

In 2014, the NCF purchased a rare letter signed by Herbert O. Yardley for $300 from a private seller. The letter dated 6 June 1931, is type-written on Yardley’s stationary and signed in blue ink. The letter is addressed to Mr. Ross Baker, from Bobbs-Merrill Co., New York., publisher of Yardley’s infamous 1931 novel, The American Black Chamber (aka the ABC). The ABC describes the inner workings of the American government cryptography organization called the Black Chamber. Cryptography historian Dr. David Kahn called the book, “the most famous book on cryptology ever published.”

Of note is the first paragraph of the letter which states: “It is inconceivable to me that American officials should deny the existence of the American Black Chamber, which was supported secretly by War Department and State Department funds and secluded in a brownstone front in New York.” Other passages in the letter describe the creation of the cryptology section of the State Department, residence addresses for the ABC, and the time spent in New York until the American Black Chamber was closed.

The last and only paragraph on page 2 begins: “It is utterly ridiculous for the United States Government to depend upon antiquated methods for the encipherment of its messages.” Signed ephemera from Yardley is rarely available for sale, especially correspondence dealing with his ABC novel, and will be a unique addition to our Yardley collection. A photo of the passage from the first paragraph is included below.