Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Software Assurance Using Structured Assurance Case Models



Thomas R. Rhodes, Frederick E. Boland Jr., Elizabeth N. Fong, Michael J. Kass


Software assurance is an important part of the software development process to reduce risks and ensure that the software is dependable and trustworthy. Software defects and weaknesses can often lead to software errors and failures and to exploitation by hackers and criminals who attempt to exploit software vulnerabilities. Testing, certification and accreditation have been traditionally used in the software assurance process to attempt to improve software trustworthiness. In this paper, we examine a methodology known as a structured assurance model, which has been widely used for assuring system safety, for its potential application to software assurance. We describe the structured assurance model and examine its application and use for software assurance. We identify strengths and weaknesses of this approach and suggest areas for further investigation and testing.
NIST Interagency/Internal Report (NISTIR) - 7608
Report Number


product assurance, software assurance, software assurance case, software security, structured assurance case model, structured software assurance model.
Created May 1, 2009, Updated February 19, 2017