Rule Atlas
COSO ERM: Auditing Cloud Computing: Assurance in the Shared Responsibility Era
Under COSO ERM (The IIA (GIAS) / COSO), auditing Cloud Computing: Assurance in the Shared Responsibility Era establishes the authoritative rules tested on the IIA CIA. A world-class guide for internal auditors on evaluating cloud computing risks under GIAS 2024. VoraPrep verifies every threshold, worked table, and practice question below against the current IIA CIA blueprint.
The Shared Responsibility Model in Detail
| Responsibility Layer | IaaS (Infrastructure) | PaaS (Platform) | SaaS (Software) |
|---|---|---|---|
| Data & Access Management | Customer | Customer | Customer |
| Application Logic | Customer | Customer | Provider |
| Runtime & Middleware | Customer | Provider | Provider |
| Operating System | Customer | Provider | Provider |
| Virtualization | Provider | Provider | Provider |
| Servers & Storage | Provider | Provider | Provider |
| Networking (Physical) | Provider | Provider | Provider |
During an assurance engagement reviewing the procurement-to-pay process at a large manufacturing firm, an internal auditor's objective is to identify potential duplicate payments made to vendors over the past fiscal year. The auditor has full access to the complete accounts payable and payment disbursement data. Which data analytics procedure would be most effective for achieving this specific objective?
Worked Example: Scoping the HRCloud SaaS Audit
Scenario: The CAE at Meridian Manufacturing has added an audit of the new SaaS-based HR and payroll system, 'HRCloud,' to the annual audit plan. The engagement lead is deciding which of two potential procedures should be the primary focus: (1) A review of HRCloud's SOC 2 Type 2 report, or (2) A review of Meridian's internal user access review and termination processes for the HRCloud application.
- Step 1: Identify the Service Model. The system is explicitly identified as SaaS. This means the provider (HRCloud) manages the application, platform, and infrastructure. Meridian (the customer) manages its data and who can access it.
- Step 2: Apply the Shared Responsibility Model. In a SaaS model, Meridian's primary responsibilities are "in" the cloud—specifically, user access controls and data configuration. HRCloud's SOC 2 report provides assurance over the provider's controls "of" the cloud. While important, the SOC report is a vendor monitoring tool. The direct operational control owned by Meridian is user access.
- Step 3: Determine the Highest-Risk Area Within Customer Control. The greatest risk for sensitive Personally Identifiable Information (PII) in an HR system often comes from improper access—current employees having excessive privileges or terminated employees retaining access. This is entirely within Meridian's control.
- Conclusion: Therefore, the most critical procedure is to audit Meridian's internal user access review and termination processes. This directly tests a key control that Meridian owns and operates to protect its most sensitive data within the SaaS application.
Common IIA CIA Distractors on COSO ERM
- 1Use this four-step framework to deconstruct any cloud-related exam question.
- 2Step 1: Identify the Cloud Service Model. The first clue is always the model mentioned (IaaS, PaaS, or SaaS). This single piece of information defines the entire control landscape and is the key to the question.
- 3Distinguish mandatory statutory requirements ("shall / must") from permissive safe-harbor elections ("may").
- 4Verify effective dates and current-year inflation adjustments before computing dollar caps or penalty rates.
Frequently Asked Questions: COSO ERM
What is the core rule under COSO ERM (Auditing Cloud Computing: Assurance in the Shared Responsibility Era)?
Under COSO ERM (The IIA (GIAS) / COSO), auditing Cloud Computing: Assurance in the Shared Responsibility Era establishes the authoritative rules tested on the IIA CIA. A world-class guide for internal auditors on evaluating cloud computing risks under GIAS 2024. VoraPrep verifies every threshold, worked table, and practice question below against the current IIA CIA blueprint.
How is COSO ERM tested on the IIA CIA?
Use this four-step framework to deconstruct any cloud-related exam question. Step 1: Identify the Cloud Service Model. The first clue is always the model mentioned (IaaS, PaaS, or SaaS). This single piece of information defines the entire control landscape and is the key to the question.
Where can I practice IIA CIA questions on Auditing Cloud Computing: Assurance in the Shared Responsibility Era?
Test yourself instantly with the free playable IIA CIA question on this page, or launch VoraPrep's full IIA CIA adaptive question bank, interactive lessons, and 1:1 exam simulator at voraprep.com/cia.