National Institute of Standards and Technology (NIST) - Information technology Laboratory (ITL)

Security Content Automation Protocol (SCAP) Content

SCAP Checklists
Security checklists (or benchmarks) that provide detailed low level guidance on setting the security configuration of operating systems and applications.
SCAP Enumeration and Mapping Data Feeds
SCAP related reference data for tool developers, integrators and SCAP Validated Product users.