ISO 27017 Cloud Service Agreement Security Review

Transform cloud contracts into compliance-ready security frameworks with automated ISO 27017 control mapping.

#iso27017#cloud security#compliance#vendor assessment#contract review

Created by PromptLib Team

February 11, 2026

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You are an expert cloud security auditor and ISO 27017 compliance specialist with deep knowledge of cloud service provider (CSP) contractual frameworks and shared responsibility models. Conduct a comprehensive ISO 27017:2015 compliance review of the provided Cloud Service Agreement. **CONTEXT:** - Cloud Service Model: [CLOUD_SERVICE_MODEL] (IaaS/PaaS/SaaS/Other) - Client Organization Profile: [CLIENT_TYPE] (Enterprise/SME/Government/Healthcare/Financial) - Specific Compliance Drivers: [COMPLIANCE_DRIVERS] (GDPR/HIPAA/PCI-DSS/etc.) - Agreement Text: [AGREEMENT_TEXT] **ANALYSIS FRAMEWORK:** Evaluate the agreement against these ISO 27017 specific control areas: 1. **Virtualization Security** (Controls A.9.1.8, A.12.1.1) - Hypervisor isolation, VM segregation 2. **Data Segregation** (Control A.12.3.1) - Multi-tenant data separation mechanisms 3. **Customer Data Deletion/Return** (Controls A.8.1.4, A.8.3.2) - Asset disposal, data retention post-termination 4. **Cloud-Specific Monitoring** (Controls A.12.4.1, A.12.4.3) - Log access rights, event monitoring visibility 5. **Subcontracting & Supply Chain** (Controls A.15.1.1, A.15.1.2) - Third-party services, chain of custody 6. **Incident Response Coordination** (Controls A.16.1.1, A.16.1.4) - Notification timelines, forensic cooperation 7. **Business Continuity** (Controls A.17.1.1, A.17.2.1) - Redundancy commitments, portability guarantees **DELIVERABLES:** 1. **Executive Summary**: Overall compliance percentage and top 3 critical risks 2. **Control Mapping Matrix**: Table with columns: ISO 27017 Control ID | Control Description | Agreement Clause Reference | Compliance Status (Full/Partial/Missing) | Evidence Quote | Risk Level 3. **Gap Analysis**: Specific missing clauses required by ISO 27017 not present in the agreement 4. **Shared Responsibility Assessment**: Evaluation of responsibility allocation clarity between CSP and Customer 5. **Risk-Weighted Amendment Priority List**: Contract language suggestions ranked by security impact (Critical/High/Medium) 6. **Compliance Roadmap**: 30-60-90 day action plan to address deficiencies **CONSTRAINTS:** - Distinguish between ISO 27001 general controls and ISO 27017 cloud-specific additions - Consider [CLOUD_SERVICE_MODEL] specific responsibilities (e.g., IaaS requires more customer-side controls than SaaS) - Flag any clauses that contradict ISO 27017 principles - Provide specific contractual language suggestions, not generic advice

Best Use Cases

Pre-contract due diligence: Evaluate CSP agreements before cloud migration to ensure ISO 27017 compliance from day one of service adoption.

Annual vendor security assessments: Conduct yearly reviews of existing cloud contracts as ISO 27017 standards and threat landscapes evolve.

Procurement team enablement: Provide legal/procurement teams with technical security requirements translated into contractual language during vendor negotiations.

ISO 27017 certification preparation: Identify contract amendments needed before your organization's own ISO 27017 certification audit.

M&A technical due diligence: Assess the security posture of cloud-dependent acquisition targets by evaluating their CSP contractual protections.

Frequently Asked Questions

What's the difference between ISO 27001 and ISO 27017 in this context?

ISO 27001 provides general information security management system (ISMS) requirements applicable to any organization. ISO 27017 is a cloud-specific code of practice that extends ISO 27002 controls with additional guidance for cloud service providers and customers. This prompt specifically checks for the cloud-specific controls (like virtualization security, multi-tenant segregation, and cloud asset disposal) that ISO 27017 adds beyond base ISO 27001 requirements.

Can this prompt replace my legal counsel?

No. This prompt provides technical security compliance analysis against ISO 27017 standards but does not constitute legal advice. It identifies security gaps and suggests technical contractual language, but legal counsel should review all amendments for jurisdictional enforceability, liability allocation, and business risk tolerance.

What if my CSP only references SOC 2 or CSA STAR, not ISO 27017?

The prompt will map SOC 2 Trust Services Criteria or CSA STAR controls to their ISO 27017 equivalents where possible. However, you should note the CSP's existing certifications in [COMPLIANCE_DRIVERS] to receive a cross-mapping analysis. ISO 27017 often covers cloud-specific nuances that SOC 2 may address only generally.

How do I handle 'shared responsibility' in the review?

Specify the [CLOUD_SERVICE_MODEL] accurately (IaaS/PaaS/SaaS). The AI will then evaluate whether the agreement clearly delineates which party (CSP vs. Customer) is responsible for each ISO 27017 control, flagging ambiguous language that could create compliance gaps or audit failures.