NIST Special Publication 800-53 is published by the National Institute of Standards and Technology (NIST), a US federal agency within the Department of Commerce. The current version is Revision 5 (September 2020, updated December 2020), which defines over 1,000 security and privacy controls organized in 20 control families (Access Control, Audit and Accountability, Configuration Management, Incident Response, System and Communications Protection, Supply Chain Risk Management, etc.). NIST 800-53 is mandatory for US federal agencies and their contractors under FISMA (Federal Information Security Modernization Act) and serves as the control baseline for FedRAMP (cloud), CMMC (defense contractors), and many state/local government programs. Beyond the US, it is widely adopted internationally as a comprehensive reference catalog — organizations in finance, healthcare, and critical infrastructure worldwide use NIST 800-53 as their control framework. The standard defines three baselines (Low, Moderate, High) corresponding to the potential impact of a security breach. NIST 800-53 is not a certification itself but the control catalog against which systems are assessed; formal authorization (ATO — Authority to Operate) is granted by an authorizing official after an assessor verifies control implementation using NIST SP 800-53A assessment procedures. The companion OSCAL (Open Security Controls Assessment Language) standard, also from NIST, provides machine-readable formats for expressing 800-53 controls and assessment results.
The Health Insurance Portability and Accountability Act (HIPAA) is a United States federal law enacted in 1996 and enforced by the Department of Health and Human Services (HHS) Office for Civil Rights (OCR). HIPAA is not a voluntary standard or certification — it is mandatory US law with civil and criminal penalties for non-compliance (fines up to $1.5M per violation category per year, and criminal penalties including imprisonment). HIPAA applies to covered entities (health plans, healthcare clearinghouses, and healthcare providers who transmit health information electronically) and their business associates (any entity that creates, receives, maintains, or transmits Protected Health Information — PHI — on behalf of a covered entity). The law’s security requirements are defined primarily in two rules: the Privacy Rule (what PHI can be used and disclosed) and the Security Rule (administrative, physical, and technical safeguards required to protect electronic PHI — ePHI). Key technical requirements include access controls, audit controls, integrity controls, transmission security (encryption), and contingency planning. Unlike prescriptive standards (like CIS or DISA STIG), HIPAA’s Security Rule is flexible and scalable — it defines required outcomes but allows organizations to determine the specific technologies used. The Breach Notification Rule requires reporting unauthorized disclosures to HHS and affected individuals within 60 days. HIPAA has no “certification” — compliance is demonstrated through documented risk assessments, policies, and technical controls.
The Federal Risk and Authorization Management Program (FedRAMP) is a US government-wide program, codified into law by the FedRAMP Authorization Act of 2022, that provides a standardized approach to security assessment, authorization, and continuous monitoring for cloud products and services used by federal agencies. FedRAMP is administered by the General Services Administration (GSA) and is mandatory — any cloud service (SaaS, PaaS, IaaS) that stores, processes, or transmits federal data or metadata must achieve FedRAMP authorization before it can be used by US government agencies or their contractors. The program defines three impact levels: Low (limited adverse effect), Moderate (serious adverse effect), and High (severe or catastrophic effect — applies to law enforcement, emergency, financial, and health systems). Each level maps to NIST SP 800-53 Rev 5 control baselines: FedRAMP High requires implementation of approximately 421 controls. Authorization is achieved through either an Agency ATO (a specific agency sponsors the assessment) or the newer FedRAMP 20-X experimental accelerated path. Once authorized, cloud service providers (CSPs) must maintain continuous monitoring — monthly vulnerability scans, annual penetration testing, and Plan of Action & Milestones (POA&M) reporting — or risk revocation. Authorized services are listed on the FedRAMP Marketplace.
