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Governance, Risk, Audit & Privacy · Intermediate

Information System Security Officer (ISSO)

Individual responsible for maintaining the day-to-day operational security posture of an information system.

Definition

The ISSO supports the system owner, manages security documentation, coordinates assessments, tracks POA&Ms, and monitors compliance. ISSOs are central to RMF execution. An ISSM (manager) typically oversees multiple ISSOs.

Example

The ISSO updates the SSP after a new database server is added.

Exam tip

The ISSO cannot accept risk on behalf of the organization.

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