System Security Plan (SSP)

A System Security Plan is a comprehensive document that outlines security controls and procedures for protecting a specific information system.

This formal document serves as the primary blueprint for how an organization will implement, monitor, and maintain security measures to protect sensitive data and system resources.

The plan typically includes detailed descriptions of the system's security architecture, risk assessments, control implementations, roles and responsibilities, incident response procedures, and compliance requirements. It identifies specific threats to the system, evaluates vulnerabilities, and documents how each identified risk will be mitigated through technical, administrative, or physical security controls.

System Security Plans are often required for regulatory compliance, particularly in government environments following frameworks like NIST or for organizations subject to standards such as FISMA, HIPAA, or SOX. The document must be regularly updated to reflect changes in the system, threat landscape, or regulatory requirements.

A well-developed System Security Plan serves multiple purposes: it provides clear guidance for security implementation, establishes accountability for security responsibilities, facilitates security assessments and audits, and demonstrates due diligence in protecting organizational assets. The plan essentially transforms abstract security requirements into concrete, actionable procedures tailored to the specific system's needs and risk profile.