This article is from the Computer Security Evaluation FAQ, by Trusted Product Evaluation Program TPEP@dockmaster.ncsc.mil.
MS-DOS, PC-DOS, and DR-DOS have not been evaluated. Without
modification, it is apparent from the most cursory examination
that they do not implement many of the features required by the
C1 class of the Trusted Computer System Evaluation Criteria
(TCSEC). Several vendors support a DOS application interface
in products designed to achieve higher class ratings.
 
Continue to: