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CISM · Question #463

Which of the following is the MOST effective way to verify a service provider is maintaining adequate controls to protect customer data?

The correct answer is C. Review annual independent controls reports of the service provider. Annual independent controls reports-such as SOC 2 Type II or ISO 27001 audit reports-provide objective, comprehensive, third-party verification that a service provider's controls are designed and operating effectively over time. SLAs (A) are contractual commitments but do not…

Submitted by suresh_in· Apr 18, 2026Information Security Risk Management

Question

Which of the following is the MOST effective way to verify a service provider is maintaining adequate controls to protect customer data?

Options

  • AReview third-party service level agreements (SLAs).
  • BPerform a penetration test against the service provider.
  • CReview annual independent controls reports of the service provider.
  • DProvide standards by which to protect the data to the service provider.

How the community answered

(31 responses)
  • A
    10% (3)
  • B
    6% (2)
  • C
    81% (25)
  • D
    3% (1)

Explanation

Annual independent controls reports-such as SOC 2 Type II or ISO 27001 audit reports-provide objective, comprehensive, third-party verification that a service provider's controls are designed and operating effectively over time. SLAs (A) are contractual commitments but do not verify actual control performance. A penetration test (B) is narrow in scope and only reveals technical vulnerabilities at a point in time. Providing standards (D) sets expectations but does not confirm compliance. Independent audit reports are the gold standard for third-party assurance.

Topics

#Third-party assurance#Vendor risk management#Control verification#Independent audits

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