ISO/IEC 27018 — Protection of Personally Identifiable Information (PII) in Public Clouds

Overview

ISO/IEC 27018 isan international privacy framework that helps organizations protectPersonally Identifiable Information (PII) processed by public cloudservice providers. It establishes guidelines and controls forsecuring PII in cloud environments, supporting organizations’ dataprotection and privacy management objectives in line with globalcompliance requirements.

Developed andpublished by the International Organization for Standardization (ISO)and the International Electrotechnical Commission (IEC), ISO/IEC27018 is widely adopted by cloud service providers, regulators, andenterprises seeking to ensure robust privacy safeguards. Theframework builds on ISO/IEC 27001, focusing on privacy governance,risk management, and specific security measures for handling customerdata in the cloud.

Organizationstypically implement ISO/IEC 27018 by integrating its controls intoexisting information security management systems (ISMS), enhancingprivacy policies, and conducting risk assessments of cloud-basedservices. Adoption supports compliance with global data protectionlaws and facilitates independent audits, often aligning with ISO27001 certification and other cybersecurity compliance programs.

Why it Matters

ISO/IEC 27018 iscrucial for organizations seeking to demonstrate responsiblemanagement and protection of personal data in public cloudenvironments.

Key benefitsinclude:

•  Strengthen data privacy safeguards

Bolster privacycontrols and processes to ensure the confidentiality and integrity ofpersonally identifiable information in the cloud.

•  Enhance regulatory alignment

Supportcompliance with global data protection requirements, reducing therisk of legal penalties or contractual breaches.

•  Improve audit readiness

Enableindependent assessments of privacy practices and streamlinepreparation for customer, partner, or regulatory audits.

•  Support risk-based decision making

Facilitatethorough risk assessments for cloud-based services, allowingorganizations to address threats and vulnerabilities effectively.

•  Increase customer and stakeholder trust

Demonstratestrong privacy commitments to clients and partners, buildingconfidence in the handling of sensitive cloud data.

How it Works

ISO/IEC 27018 isstructured as a privacy-specific extension to the ISO/IEC 27000series, building on the ISO/IEC 27001 ISMS and ISO/IEC 27002controls. It organizes control objectives and implementation guidanceinto a control catalog and governance domains focused on protectionof PII in public clouds, and aligns with risk management andlifecycle processes and contractual requirements.

Organizationsimplement ISO/IEC 27018 by integrating its privacy controls intotheir ISMS, conducting PII-focused risk assessments, and mappingcontrols to cloud services and supplier contracts. Operationalactivities include deploying technical security controls (encryption,access management), establishing organizational processes for datahandling and consent, enabling monitoring and logging, performingcompliance assessments, and maintaining incident response andthird party oversight.

UsingSmartSuite, teams can operationalize ISO/IEC 27018 through controllibraries mapped to risk registers, policy governance workflows, andcentralized evidence collection. Compliance tracking, remediationworkflows, audit readiness features, and reporting dashboards supportcontinuous monitoring of security controls, risk management,governance, and overall security practices.

Key Elements

•  Privacy Governance Structures

Establishesaccountability frameworks and organizational roles dedicated tomanaging PII in cloud environments.

•  PII Protection Control Families

Specifiescategories of controls for handling the collection, processing,storage, and transmission of personally identifiable information.

•  Cloud Service Provider Obligations

Describescontractual and operational requirements for providers to ensure PIIconfidentiality and regulatory compliance.

•  Data Subject Rights Management

Outlinesprocesses for supporting individual rights, such as access,correction, and erasure, within cloud-hosted data.

•  Risk Assessment Processes

Definesprocedures for identifying, evaluating, and addressing privacy risksassociated with cloud-based PII processing.

•  Transparency and Audit Mechanisms

Providesmechanisms for demonstrating compliance, including audit logging,independent assessment, and communication with customers.

Framework Scope

ISO/IEC 27018 isadopted by cloud service providers and enterprises responsible forprocessing personally identifiable information (PII) in public cloudenvironments. The framework governs privacy protections, managementof customer data, and implementation of appropriate cloud securitycontrols, typically supporting compliance with privacy regulations,risk management, and meeting certification or regulatory obligations.

Framework Objectives

ISO/IEC 27018defines objectives for enhancing data protection, privacy governance,and regulatory compliance in public cloud environments.

•  Safeguard personally identifiable information through robustdata protection controls

•  Strengthen cybersecurity risk management tailored to cloudservice providers

•  Enhance governance and oversight of PII processing in cloudenvironments

•  Support compliance with global privacy laws and regulatoryrequirements

•  Improve operational resilience by addressing privacy threats andvulnerabilities

•  Demonstrate audit readiness with standardized privacy andsecurity controls ISO/IEC 27018 supplements ISO/IEC 27001 withcontrols for protecting personal data in public cloud services and iscommonly mapped to GDPR requirements and the CSA Cloud ControlsMatrix. Organizations implement 27018 for cloud PII protection whenseeking certification, demonstrating regulatory compliance, improvingprivacy governance, or operationalizing privacy controls.

Common Framework Mappings

Organizationsmap ISO/IEC 27018 to complementary privacy, cloud security, and dataprotection frameworks to harmonize controls, streamline audits, andensure consistent PII handling across cloud services and regulatoryregimes.

Mappedframeworks include:

Cloud SecurityAlliance Cloud Controls Matrix

EU General DataProtection Regulation (GDPR)

ISO/IEC 27001

ISO/IEC 27002

ISO/IEC 27017

ISO/IEC 27701

NIST PrivacyFramework

SOC 2 (AICPATrust Services Criteria)