NIST 800-53A: Assessing Security and Privacy Controls

Explain assessment objects, methods, and objectives under NIST 800-53A; examine policies and procedures, components, personnel, and processes; apply examination, interviewing, and testing to verify controls and outcomes.

assessment objects, including specifications, mechanisms, activities, and individuals, underpin Healthnet’s security program guided by the NIST 853 standard, detailing policies, ehr encryption, firewalls, backups, and training.

Explore three primary assessment methods—examine, interview, and test—and how depth and coverage drive evidence gathering to evaluate the effectiveness of security and privacy controls.

Explore how NIST 800-53A assesses security and privacy controls through structured assessment objectives, granular control breakdowns, and flexible methods (examine, interview, test) tailored to each system.

Explore how organization-defined parameters (odps) structure assessment procedures for security and privacy controls, including assignment and selection operations, ODP numbering conventions, and referencing in determination statements.

Describe the CA zero three assessment with organization defined parameters, an ODP selection (CA 0301 ODP 01) and embedded assignment (CA 0301 ODP 02), noting angle-bracket values, depth, and coverage.

Assess enhancements to security controls using sequential numbering (AC 1701, AC 1702) and develop assessment objectives with the same process as the base control to ensure alignment with security objectives.

Drive effective security and privacy control assessments through preparation, plan development, controlled execution, evidence gathering and reporting, followed by corrective actions and ongoing monitoring.

Prepare for security and privacy control assessments by coordinating stakeholders, defining scope and resources, and providing artifacts and policies to assessors, ensuring independence and communication for a credible, risk-based authorization.

Define the objective, scope, and time frame of the control assessment; assemble the assessment team, notify stakeholders, allocate resources, and gather artifacts for a clear security and privacy evaluation.

Develop security and privacy assessment plans with clear objectives and a detailed roadmap for evaluating controls, tailoring procedures, and selecting examinations, testing, and interviews, including encryption and access controls.

Develop and tailor a comprehensive Healthnet security and privacy assessment plan, detailing objectives, scope, procedures, roles, documentation, execution, findings, and ongoing monitoring.

Assessors execute the approved security and privacy assessment plan, document findings in assessment reports and summaries, and support risk decisions by system owners, authorizing officials, and risk management processes.

Assess cryptographic protection and system backups to verify AES 256 and SSL TLS usage, backup frequencies, and ongoing reviews for compliance with NIST SP 853 controls.

Define security and privacy capabilities by integrating multiple SP 853 controls into cohesive capabilities. Assess and tailor controls through root cause analysis to support continuous monitoring and risk-based authorization decisions.

Assess security and privacy controls using NIST 800-53A, define scope, review documentation, interview key personnel, and perform system tests to identify weaknesses and provide actionable recommendations.