The official logo of the USD(R&E)


DoD Releases Online Cyber Resilient Weapon Systems Body of Knowledge Version 3.1 for Engineering Workforce

April 19, 2023

The DoD announced the Version 3.1 release of the Online Cyber Resilient Weapon Systems Body of Knowledge (CRWS-BoK). This free resource provides publicly available information to assist the public and private sector workforce in designing, engineering, and safeguarding CRWS. The System Security (SysSec) Directorate in the Office of the Under Secretary of Defense for Research and Engineering (OUSD(R&E)) first launched this vital resource in May 2021 for the system security engineering (SSE) and science and technology (S&T) communities. Since then, SysSec has launched several version updates to enhance the user experience.

Version 3.1 highlights include:


Enhanced search options that allow users to filter resources by version date


Increased feedback opportunities across the CRWS-BoK to encourage and collect user suggestions


Improved CRWS-BoK Review Board process, allowing experts to more frequently and efficiently review and approve new resources for the CRWS-BoK


Updated author information storage to improve citation capability and standardization


Upgraded notification features and site functionality to share the latest CRWS news and resources with users, and to inform users when they have successfully submitted a potential resource for review

“Our goal with these version updates is to continually refine the user experience so that the CRWS-BoK remains an essential resource for our SSE and S&T workforces,” said Ms. Melinda Reed, SysSec Director. “We know that the CRWS-BoK helps to maintain our Nation’s technological advantage by providing the knowledge and components our defense workforce needs to provide secure CRWS for our warfighters.”

R&E also partners with SSE and S&T professionals through the SysSec Directorate to foster assured resilient missions, systems, and components. It leverages best practices and fosters innovation that enables the Nation’s SSE and S&T workforce to engineer CRWS that can successfully operate in the face of persistent cyber threats.

For additional information and to register for a free account, please visit the Online CRWS-BoK at The site is optimized for Chrome, Edge, Firefox, and Safari browsers.

About USD(R&E)

The Under Secretary of Defense for Research and Engineering (USD(R&E) is the Chief Technology Officer of the Department of Defense. The USD(R&E) champions research, science, technology, engineering, and innovation to maintain the United States military’s technological advantage. Learn more at, follow us on Twitter @DoDCTO, or visit us on LinkedIn.

Office of the Under Secretary of Defense,
Research and Engineering (OUSD(R&E))
3030 Defense Pentagon, Washington, DC 20301-3030