What is A1 security?
A1 Security is a security rating used to evaluate the safety of computer products used in government and military organizations. The rating was developed by the US Computer Security Center (NCSC) as an integral part of the Standard 5200.28-STD of the US Department of Defense DoD.
A1's security was originally part of a series that included various levels of security ratings specifically designed for all types of computer products consumed in strategically sensitive organizations.
A1 security is the highest achievable rating within this qualification test. A1 security requires that every computer system pass a series of tests of its design, engineering, security policy models, data tagging, and other military-grade security design tests. Systems that meet A1's security standards are also known as verified designs, in which the underlying system functionality is comprehensively analyzed and verified against specifications at the highest level to ensure their security.