ISO 27018
Cloud Privacy Controls
Protection of Personally Identifiable Information (PII) in Public Clouds
The international standard for protecting personally identifiable information in public cloud environments. VULNSEE helps SaaS platforms, cloud processors, and enterprise data controllers implement verified cloud privacy controls that foster trust and satisfy stringent global data protection regulations.
By establishing contractual transparency, banning unauthorized advertising data harvesting, and enforcing automated data deletion workflows, ISO 27018 establishes your organization as a responsible guardian of customer privacy.
Understanding
ISO/IEC 27018:2025
ISO/IEC 27018:2025 establishes commonly accepted control objectives, controls, and guidelines for implementing measures to protect Personally Identifiable Information (PII) in accordance with the privacy principles outlined in ISO/IEC 29100.
When enterprises store and process sensitive records in multi-tenant cloud environments, data privacy ceases to be solely a legal contractual matter. It becomes a deeply technical architectural requirement demanding granular controls around cryptographic tenant isolation, access logging, and lifecycle sanitization.
Operating as an add-on to ISO 27001, ISO 27018 provides public cloud service providers with concrete guidelines on how to act as trustworthy PII processors. It grants enterprise clients the transparency and auditability necessary to meet their own regulatory obligations under GDPR, the UK Data Protection Act, and CCPA/CPRA.
Implementing ISO 27018 demonstrates that your organization respects data subject rights, prevents unauthorized secondary usage of client records, and maintains defensible technical and organizational privacy safeguards.
PII Segregation
Logical and cryptographic controls ensuring customer identities and personal records are safeguarded from unauthorized access or exposure.
Full Transparency
Comprehensive disclosure regarding where PII is stored, which sub-processors are engaged, and how data flows through cloud infrastructure.
Defensible Governance
Demonstrable adherence to international privacy principles that simplifies enterprise vendor audits and regulatory compliance.
No Commercial Exploitation
Strict technical and policy guarantees prohibiting the use of customer personal data for targeted advertising or unauthorized marketing profiling.
Core Privacy Principles &
Annex A Cloud Controls
ISO 27018 builds directly upon the 11 privacy principles of ISO/IEC 29100 and introduces mandatory Annex A controls designed for cloud service providers acting as data processors:
Consent & Processing Limits
Cloud processors must process personal data solely in accordance with documented customer instructions. Customer data cannot be used for any other purpose without express consent.
Advertising Restrictions
Strict prohibition against using personal information for advertising or profiling unless the cloud customer has granted explicit, unambiguous consent.
Data Deletion & Return
Documented technical procedures guaranteeing that customer personal data is securely returned or completely erased across all storage clusters and backups upon contract conclusion.
Sub-Processor Transparency
Obligation to disclose all third-party sub-processors before onboarding them, allowing cloud customers to review privacy capabilities and exercise objection rights.
Prompt Breach Notification
Mandatory mechanisms ensuring cloud customers are notified without undue delay in the event of an unauthorized access, breach, or compromise affecting customer PII.
Geographic Location Disclosure
Clear contractual identification of the countries and jurisdictions where customer PII may be processed, stored, or replicated across the cloud provider's network.
Where Cloud Privacy
Programs Frequently Break Down
Achieving ISO 27018 compliance requires operational collaboration between legal counsel, data protection officers (DPOs), and DevOps engineering teams.
Organizations often fail certification audits not because of bad intentions, but because technical teams lack visibility into privacy commitments made in sales contracts and Data Processing Agreements (DPAs).
VULNSEE bridges this operational gap, ensuring that your technical architecture directly enforces the privacy promises made to customers and enterprise auditors.
Undisclosed Sub-Processor Tooling
Engineering teams onboarding third-party analytics, crash reporting, or AI APIs without logging them in the official sub-processor registry or notifying existing enterprise customers.
Lingering Customer Snapshots
Retaining automated database snapshots and cold storage backups containing customer PII long after the customer has cancelled their account and requested full data erasure.
Internal Use of Production PII in Staging
Replicating production cloud databases into testing, development, or QA environments where access controls, audit logging, and encryption standards are significantly weaker.
Incomplete Incident Notification Playbooks
Lacking automated workflows to notify impacted enterprise customers within required contractual windows (often 24 to 72 hours) following a security incident.
Harmonizing ISO 27018 with
ISO 27001, SOC 2, and GDPR
High-growth SaaS organizations cannot afford isolated, redundant compliance efforts. Every control should serve multiple regulatory frameworks simultaneously.
VULNSEE designs unified control architectures where ISO 27018 privacy controls map directly to ISO 27001 Annex A controls, SOC 2 Privacy Trust Services Criteria, and European GDPR processor mandates.
Our dual security and privacy advisors ensure that your engineering workflows remain agile, while generating continuous, verifiable evidence that satisfies external auditors and the most demanding enterprise procurement teams.
Regional requirements
European Union
Cloud providers acting as processors use ISO 27018 controls to support GDPR processor obligations (it is not a GDPR certification). ISO 27018 is a code of practice certified as an extension of an ISO 27001 scope by accredited certification bodies.
United States
ISO 27018 is frequently requested in enterprise cloud and SaaS procurement next to SOC 2. Certification is conducted as an extension of an ISO 27001 scope by accredited certification bodies.
United Kingdom
UK GDPR applies; ISO 27018 supports processor due diligence and transparent processing governance. Certified as an extension of an ISO 27001 scope by accredited certification bodies.
Israel
The Privacy Protection (Data Security) Regulations 2017 and Amendment 13 apply separately, and the Privacy Protection Authority has said ISO 27001 does not replace the documents they require. ISO 27018 is certified as an extension of an ISO 27001 scope by accredited certification bodies.
How an ISO 27018 Project Runs
Our structured delivery guides your organization from PII mapping through accredited extension audit.
PII Mapping & Processing Boundaries
Identify customer personal data repositories, cloud storage buckets, multi-tenant boundaries, and determine cloud processor obligations.
Cloud Privacy Gap Assessment
Evaluate current practices against ISO 27018 controls, sub-processor disclosures, marketing restrictions, and customer data return procedures.
Privacy Control Buildout & SoA
Update the Statement of Applicability (SoA), implement automated data disposal, configure sub-processor registries, and formalize breach notification playbooks.
Internal Privacy Audit & Verification
Audit operational privacy controls across cloud infrastructure, verify data subject response processes, and complete formal management review.
Accredited Extension Audit
Coordinate with your accredited certification body to evaluate ISO 27018 controls as part of your ISO 27001 certification scope.
Total Project Duration
An ISO 27018 implementation project typically runs between 3 and 6 months when conducted alongside or following ISO 27001 certification.
