Tools Pre-assessment Checklist Detailed and up-to-date pre-assessment checklist. Official CMMC Resource Official Cybersecurity Maturity Model Certification (CMMC) resource from OUSD (A&S). Official NIST Website Official website for the National Institute of Standards and Technology. FBI Cyber Crime website Official website for FBI Cyber Crime investigation CISA Cyber security The U.S. Department of Homeland Security Cyber security and Infrastructure Security Agency (CISA). NIST SP 800-171 System Security Plan Template System Security Plan Template for CUI-SSP.