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Third-party governance practiceAdvanced

Managed Service Security Governance

Managed service security governance defines how an organization directs, monitors, and assures security outcomes when important capabilities are operated by external providers.

What it means

The customer may delegate tasks, infrastructure, or operations, but it retains responsibility for understanding risk, setting requirements, making acceptance decisions, and coordinating incidents and continuity.

Why it matters

Outsourcing can create visibility gaps, concentration risk, unclear authority, and operational dependencies that are difficult to unwind during an incident or provider failure.

Practical focus

  • Define shared roles, escalation, evidence, and decision authority
  • Monitor service, control, incident, and dependency performance
  • Integrate providers into response and continuity exercises
  • Maintain transition, data return, and exit options

Common mistakes

  • Assuming certification replaces customer oversight
  • Treating provider dashboards as complete evidence
  • Failing to test cross-organizational incident processes
  • Allowing undocumented subcontractor changes

Certification relevance

This subject appears in or supports the following certification bodies of knowledge:

ISC2 ISSMPEC-Council CCISOISACA CGEIT

Authoritative sources