Frameworks · Global

ISO 27018:2025

ISO/IEC 27018 is the code of practice for protecting personally identifiable information (PII) in public cloud services where the provider acts as a PII processor. It applies the ISO/IEC 27002:2022 controls with added guidance for processing customer PII, and its Annex A adds processor controls such as processing only on customer instructions, disclosing sub-processors and data locations, notifying customers of breaches and disclosure requests, and returning or deleting PII at the end of a contract. Cloud providers usually certify to it alongside ISO/IEC 27001 to give customers assurance about how their personal data is handled.

Version
ISO/IEC 27018:2025
Requirements
131, each mapped to ProofTrail’s controls

Requirements and controls

  • 5 Organization-level controls

    • 5.1 Security policies and topic-specific policies

      Security policies include commitments to protect the PII the cloud provider processes on behalf of its customers.

      • Security Governance Program
      • Information Security & Privacy Policies
      • Management Review of Policies
      • Periodic Policy Acknowledgement
      • Data Protection Policy & Procedure
    • 5.2 Security roles and duties

      Responsibility for protecting customer PII is assigned, including a contact point for customers' privacy questions.

      • Assigned Security & Privacy Responsibilities
      • Roles & Responsibilities
      • Cybersecurity Responsibilities
      • Compliance Program Manager
      • People Operations Owner
      • Privacy Officer
    • 5.3 Separating conflicting duties

      Duties are divided so that no single person can misuse customer PII without detection.

      • Segregation of Duties
      • Organizational Structure
      • Roles & Responsibilities
    • 5.4 Management's security responsibilities

      Managers require staff who handle customer PII to apply the organization's privacy and security rules.

      • Security & Privacy Program Review
      • Periodic Policy Acknowledgement
      • New Hire Security & Privacy Training
      • Periodic Security & Privacy Training
    • 5.5 Liaison with authorities

      The provider knows which authorities may make demands about customer PII and keeps a way to contact them.

      • Cybersecurity Responsibilities
    • 5.6 Liaison with specialist security groups

      The provider follows privacy and security groups to stay current on threats to PII in cloud services.

      • Cybersecurity Responsibilities
    • 5.7 Threat intelligence gathering

      Threat information relevant to PII held in the cloud service is collected and acted on.

      • Anomalous Behavior Detection
      • Centralized Security Logging
      • Vulnerability Remediation Process
      • Incident Management Policy & Procedure
    • 5.8 Security in projects

      Projects that change the cloud service consider the protection of customer PII from the start.

      • Risk Assessment
      • Change Management Policy & Procedure
      • Approval of Changes
      • Privacy by Design Policy
    • 5.9 Asset and information inventory

      The provider knows where customer PII is stored and which systems process it.

      • Inventory of Infrastructure Assets
      • Inventory of Endpoint Assets
      • Asset Inventory Updates
      • Asset Ownership Assignment
      • Personal Data Inventory
    • 5.10 Rules for acceptable use of assets

      Staff use customer PII and the systems holding it only in ways that policy and contract allow.

      • Rules of Behavior
      • Endpoint Security Policy
    • 5.11 Returning assets

      Assets holding customer PII are returned or accounted for when staff leave or contracts end.

      • Human Resources Policy & Procedure
      • Inventory of Endpoint Assets
    • 5.12 Information classification

      Customer PII is classified so that it receives the protection it needs.

      • Data Classification Policy
      • Data Classification Labels
    • 5.13 Information labels

      Data and systems holding customer PII are labelled according to their classification.

      • Data Classification Labels
      • Data Classification Policy
    • 5.14 Transferring information

      Rules govern transfers of customer PII, and the PII is protected while in transit.

      • Transmission Confidentiality
      • Network Security Policy & Procedure
      • Third-Party Criticality Assessments
    • 5.15 Access control rules

      Access to customer PII is governed by documented access rules.

      • Access Control Policy & Procedure
      • Identity Validation
      • Production Database Access Restriction
    • 5.16 Managing identities

      Identities able to reach customer PII are managed across their whole life cycle.

      • Identity Validation
      • User Access Reviews
      • Termination of Employment
    • 5.17 Managing authentication secrets

      Credentials for systems holding customer PII are issued and protected securely.

      • Password Management Guidelines
      • Multi-Factor Authentication
      • Access Control Policy & Procedure
    • 5.18 Granting and reviewing access rights

      Access to customer PII is granted on need and reviewed regularly.

      • Access Control Policy & Procedure
      • Identity Validation
      • User Privilege Reviews
      • User Access Reviews
      • Production System Access Review
      • Termination of Employment
    • 5.19 Supplier security

      Suppliers whose services could affect customer PII are assessed and managed.

      • Vendor Management Policy & Procedure
      • Third-Party Criticality Assessments
      • Management Review of Third-Party Risks
    • 5.20 Security terms in supplier agreements

      Supplier agreements contain the security and privacy terms needed to protect customer PII.

      • Vendor Management Policy & Procedure
      • Third-Party Criticality Assessments
      • Subservice Organization Evaluation
      • Contractual Obligations Register
      • Processor Data Protection Agreements
    • 5.21 ICT supply chain security

      PII protection requirements are passed down the ICT supply chain.

      • Vendor Management Policy & Procedure
      • Third-Party Criticality Assessments
      • Subservice Organization Evaluation
      • Management Review of Third-Party Risks
    • 5.22 Supplier service monitoring and change

      Supplier services that touch customer PII are monitored and their changes reviewed.

      • Management Review of Third-Party Risks
      • Third-Party Criticality Assessments
      • Subservice Organization Evaluation
    • 5.23 Security of cloud service use

      Cloud services the provider itself relies on are managed so that customer PII stays protected.

      • Vendor Management Policy & Procedure
      • Shared Responsibility Model
      • Subservice Organization Evaluation
      • Third-Party Criticality Assessments
    • 5.24 Incident response planning

      Incident procedures cover breaches of customer PII, including how affected customers will be told.

      • Incident Management Policy & Procedure
      • Incident Tracking
      • Automated Incident Reporting
      • Incident Reporting Assistance
      • Data Breach Notification Policy
    • 5.25 Triage of security events

      Security events are assessed to decide whether customer PII may be affected.

      • Incident Management Policy & Procedure
      • Incident Tracking
    • 5.26 Responding to incidents

      Incidents involving customer PII are contained and handled under documented procedures.

      • Incident Management Policy & Procedure
      • Incident Tracking
      • Breach Risk Assessment & Notification
    • 5.27 Lessons from incidents

      Lessons from incidents affecting PII are used to strengthen protection.

      • Incident Management Policy & Procedure
      • Incident Tracking
      • Security & Privacy Program Review
    • 5.28 Evidence collection

      Evidence about incidents involving PII is collected and preserved.

      • Incident Management Policy & Procedure
      • Centralized Security Logging
    • 5.29 Security during disruption

      Protection of customer PII is maintained during disruptions.

      • Business Continuity Policy & Procedure
      • Disaster Recovery Policy
      • Disaster Recovery Testing
    • 5.30 ICT readiness for continuity

      Continuity arrangements keep the cloud service, and the customer PII in it, available after a disruption.

      • Disaster Recovery Policy
      • Business Continuity Policy & Procedure
      • Disaster Recovery Testing
      • Backup Restoration Testing
    • 5.31 Legal, regulatory and contractual obligations

      Data protection laws and contract terms that apply to processing customer PII are identified and met.

      • Data Governance
      • Statutory, Regulatory & Contractual Compliance
      • Contractual Obligations Register
      • Data Protection Policy & Procedure
    • 5.32 Intellectual property

      Intellectual property rights are respected in the operation of the cloud service.

      • Statutory, Regulatory & Contractual Compliance
    • 5.33 Protecting records

      Records about the processing of PII are protected from loss, alteration and unauthorized access.

      • Policy Documentation Retention
      • Data Retention Policy
      • Statutory, Regulatory & Contractual Compliance
    • 5.34 Privacy and PII obligations

      The provider meets the privacy and PII protection requirements that apply to it as a processor.

      • Data Protection Policy & Procedure
      • Privacy Officer
      • Privacy by Design Policy
      • Personal Data Inventory
      • Processor Data Protection Agreements
    • 5.35 Independent security review

      The provider's PII protection controls are reviewed independently, and the results are shared with customers where agreed.

      • Internal Audit
      • Security & Privacy Program Review
      • Penetration Testing
    • 5.36 Conformance with security policies

      Compliance with the policies for handling customer PII is checked regularly.

      • Internal Audit
      • Management Review of Policies
      • Statutory, Regulatory & Contractual Compliance
    • 5.37 Written operating procedures

      Procedures for operating the systems that process customer PII are documented.

      • Information Security & Privacy Policies
      • ISMS Manual
      • Change Management Policy & Procedure
      • Data Backup Policy
  • 6 Controls for people

    • 6.1 Background screening

      People with access to customer PII are screened before they start.

      • Personnel Screening
      • Competency Screening
    • 6.2 Employment terms

      Employment terms include the obligation to protect customer PII.

      • Code of Business Conduct
      • New Hire Policy Acknowledgement
      • Human Resources Policy & Procedure
      • Roles & Responsibilities
    • 6.3 Security awareness and training

      Staff are trained on handling customer PII and on the consequences of breaking privacy rules.

      • Security & Privacy Awareness
      • New Hire Security & Privacy Training
      • Periodic Security & Privacy Training
    • 6.4 Disciplinary action for breaches

      Breaches of PII handling rules lead to disciplinary action.

      • Code of Business Conduct
      • Human Resources Policy & Procedure
    • 6.5 Duties after leaving or changing role

      Obligations to protect customer PII continue after staff leave or change role.

      • Human Resources Policy & Procedure
      • Termination of Employment
    • 6.6 Confidentiality agreements

      Staff and contractors who can access customer PII are bound by confidentiality agreements.

      • New Hire Policy Acknowledgement
      • Periodic Policy Acknowledgement
      • Contractual Obligations Register
    • 6.7 Remote work security

      Remote work involving customer PII uses secured devices and connections.

      • Endpoint Security Policy
      • Endpoint Encryption
      • Multi-Factor Authentication
      • Session Lock
      • Malware Protection
    • 6.8 Reporting security events

      Staff report events that may affect customer PII without delay.

      • Automated Incident Reporting
      • Incident Reporting Assistance
      • Incident Management Policy & Procedure
  • 7 Controls for premises and equipment

    • 7.1 Physical perimeters

      Facilities processing customer PII have secure perimeters.

      • Physical Protection Policy & Procedure
    • 7.2 Controlled physical entry

      Entry to areas where customer PII is processed is restricted.

      • Physical Protection Policy & Procedure
    • 7.3 Securing offices and facilities

      Offices and rooms where customer PII is handled are secured.

      • Physical Protection Policy & Procedure
    • 7.4 Monitoring of premises

      Premises processing customer PII are watched for unauthorized access.

      • Physical Protection Policy & Procedure
      • Subservice Organization Evaluation
    • 7.5 Physical and environmental threats

      Facilities holding customer PII are protected against physical and environmental threats.

      • Physical Protection Policy & Procedure
      • Business Continuity Policy & Procedure
      • Disaster Recovery Policy
    • 7.6 Work in secure areas

      Rules govern work in secure areas where customer PII is processed.

      • Physical Protection Policy & Procedure
    • 7.7 Clearing desks and screens

      Customer PII is not left exposed on desks or unattended screens.

      • Clear Desk & Clear Screen
      • Session Lock
    • 7.8 Equipment placement and protection

      Equipment processing customer PII is placed to reduce physical risk.

      • Physical Protection Policy & Procedure
      • Endpoint Security Policy
    • 7.9 Assets used off-site

      Devices taken off-site that hold customer PII are protected.

      • Endpoint Security Policy
      • Endpoint Encryption
      • Inventory of Endpoint Assets
      • Malware Protection
    • 7.10 Storage media handling

      Storage media containing customer PII are controlled throughout their life cycle.

      • Media Disposal Policy
      • Endpoint Encryption
      • Data Classification Policy
    • 7.11 Utility services

      Utilities supporting systems with customer PII are protected against failure.

      • Physical Protection Policy & Procedure
      • Subservice Organization Evaluation
    • 7.12 Cabling protection

      Cabling for systems that process customer PII is protected.

      • Physical Protection Policy & Procedure
      • Subservice Organization Evaluation
    • 7.13 Maintaining equipment

      Equipment processing customer PII is maintained securely.

      • Endpoint Security Validation
      • Endpoint Security Policy
    • 7.14 Disposal and reuse of equipment

      Storage that held customer PII is sanitized or destroyed before disposal or reuse.

      • Media Disposal Policy
  • 8 Technology controls

    • 8.1 Endpoint devices

      Endpoint devices that can reach customer PII are secured.

      • Endpoint Security Policy
      • Malware Protection
      • Endpoint Security Validation
      • Endpoint Encryption
      • Session Lock
    • 8.2 Privileged access

      Privileged access to systems holding customer PII is restricted and monitored.

      • Production Database Access Restriction
      • User Privilege Reviews
      • Multi-Factor Authentication
      • Access Control Policy & Procedure
    • 8.3 Restricting access to information

      Access to customer PII is limited to authorized users and purposes.

      • Access Control Policy & Procedure
      • Identity Validation
      • Production Database Access Restriction
      • User Access Reviews
    • 8.4 Source code access

      Access to the cloud service's source code is controlled.

      • Identity Validation
      • User Privilege Reviews
      • Secure System Modification
      • Approval of Changes
    • 8.5 Authentication mechanisms

      Systems holding customer PII are accessed through secure authentication.

      • Multi-Factor Authentication
      • Password Management Guidelines
      • Cloud Console Session Timeout
    • 8.6 Capacity planning

      Capacity is managed so that customer PII remains available.

      • Capacity & Performance Management
      • Impact Analysis
    • 8.7 Malware protection

      Systems processing customer PII are protected against malware.

      • Malware Protection
    • 8.8 Technical vulnerability management

      Vulnerabilities in systems processing customer PII are fixed promptly.

      • Vulnerability Remediation Process
      • Centralized Flaw Remediation
      • Penetration Testing
      • Vulnerability Management Policy & Procedure
    • 8.9 Secure configuration

      Systems processing customer PII are configured securely.

      • External System Connections
      • Endpoint Security Validation
      • Endpoint Security Policy
      • Impact Analysis
    • 8.10 Deleting information

      Customer PII is deleted once it is no longer required.

      • Data Retention Policy
      • Media Disposal Policy
    • 8.11 Masking data

      Customer PII is masked or pseudonymized where appropriate.

      • Test Data Protection
      • Data Classification Policy
      • Encryption Policy & Procedure
    • 8.12 Preventing data leakage

      Leakage of customer PII is prevented and detected.

      • Data Classification Policy
      • Transmission Confidentiality
      • Endpoint Encryption
      • Encryption of Data at Rest
    • 8.13 Backups

      Backups of customer PII are taken, protected and kept according to policy.

      • Data Backup Policy
      • Data Backups
      • Backup Restoration Testing
    • 8.14 Redundant processing facilities

      Redundancy keeps the services that process customer PII available.

      • Data Backups
      • Business Continuity Policy & Procedure
      • Disaster Recovery Policy
    • 8.15 Logging activity

      Access to and processing of customer PII are logged, and the logs are protected.

      • Centralized Security Logging
      • Anomalous Behavior Detection
    • 8.16 Monitoring for anomalies

      Systems holding customer PII are monitored for unusual activity.

      • Anomalous Behavior Detection
      • Centralized Security Logging
      • Capacity & Performance Management
      • Unauthorized Activity Monitoring
    • 8.17 Time synchronization

      System clocks are synchronized so that events involving PII can be traced.

      • Clock Synchronization
    • 8.18 Powerful utility programs

      Utility programs that could bypass PII protections are restricted.

      • User Privilege Reviews
      • Production Database Access Restriction
    • 8.19 Software installation on production systems

      Software installation on systems holding customer PII is controlled.

      • Approval of Changes
      • Endpoint Security Policy
      • Rules of Behavior
    • 8.20 Network protection

      Networks carrying customer PII are secured.

      • External System Connections
      • Limit Network Connections
      • Network Security Policy & Procedure
      • Transmission Confidentiality
    • 8.21 Network service security

      Network services used for customer PII are secured and monitored.

      • External System Connections
      • Network Security Policy & Procedure
      • Network & Data Flow Diagrams
      • Subservice Organization Evaluation
    • 8.22 Network segmentation

      Networks are segregated to isolate systems holding customer PII.

      • Limit Network Connections
      • External System Connections
      • Network Security Policy & Procedure
      • Network & Data Flow Diagrams
    • 8.23 Filtering web access

      Web access is filtered to reduce threats to customer PII.

      • Malware Protection
      • Endpoint Security Policy
    • 8.24 Cryptography

      Customer PII is encrypted where appropriate, with keys managed securely.

      • Encryption Policy & Procedure
      • Encryption of Data at Rest
      • Transmission Confidentiality
      • Endpoint Encryption
    • 8.25 Secure development process

      The cloud service is developed under a secure development process that considers privacy.

      • Change Management Policy & Procedure
      • Secure System Modification
      • Approval of Changes
      • Privacy by Design Policy
    • 8.26 Security requirements for applications

      Privacy and security requirements are defined for applications that process PII.

      • Change Management Policy & Procedure
      • Input Range Validation
      • Mandatory Field Validation
      • Vulnerability Remediation Process
    • 8.27 Secure architecture and engineering

      Systems are engineered with privacy and security principles built in.

      • Change Management Policy & Procedure
      • Network & Data Flow Diagrams
      • Privacy by Design Policy
    • 8.28 Secure coding practices

      Code that processes PII follows secure coding practices.

      • Change Management Policy & Procedure
      • Approval of Changes
      • Input Range Validation
      • Vulnerability Remediation Process
    • 8.29 Security testing before release

      Security testing confirms that PII protections work before release.

      • Approval of Changes
      • Regression Testing
      • Penetration Testing
    • 8.30 Supervising outsourced development

      Outsourced development that involves PII is supervised.

      • Vendor Management Policy & Procedure
      • Third-Party Criticality Assessments
      • Change Management Policy & Procedure
      • Approval of Changes
    • 8.31 Separate development, test and production

      Production PII stays out of development and test environments unless it is protected to production standards.

      • Test Data Protection
      • Secure System Modification
    • 8.32 Change control

      Changes to systems processing customer PII are controlled.

      • Change Management Policy & Procedure
      • Secure System Modification
      • Approval of Changes
      • Deployment Notifications
    • 8.33 Test data

      Test data is chosen and protected so that customer PII is not exposed.

      • Test Data Protection
    • 8.34 Protecting systems during audits

      Audit testing is planned so that it does not expose customer PII.

      • Internal Audit
      • Penetration Testing
  • Annex A Extended controls for public cloud PII processors

    • A.2 Individual choice and consent

      • A.2.1 Helping customers honor individuals' rights

        The provider gives customers the means to respond when individuals ask to access, correct or erase their PII.

        • Data Subject Requests
        • Privacy Officer
        • Contractual Obligations Register
    • A.3 Legitimate, specified purposes

      • A.3.1 Processing only on customer instructions

        Customer PII is processed only for the purposes the customer has set out in the contract.

        • Data Protection Policy & Procedure
        • Processor Data Protection Agreements
        • Contractual Obligations Register
        • Personal Data Inventory
      • A.3.2 No marketing use of customer PII

        Customer PII is not used for marketing or advertising without the individual's express consent, and that consent is never a condition of using the service.

        • Data Protection Policy & Procedure
        • Consent Management
        • Contractual Obligations Register
    • A.5 Minimizing data

      • A.5.1 Erasing temporary files

        Temporary files and documents created while processing PII are erased within a defined period.

        • Data Retention Policy
        • Media Disposal Policy
    • A.6 Limits on use, retention and disclosure

      • A.6.1 Notifying customers of disclosure demands

        The provider tells the customer about legally binding demands to disclose its PII, unless the law forbids it.

        • Data Protection Policy & Procedure
        • Contractual Obligations Register
        • Privacy Officer
      • A.6.2 Recording PII disclosures

        Every disclosure of customer PII to a third party is recorded, including what was disclosed, to whom and when.

        • Personal Data Inventory
        • Data Subject Requests
        • Privacy Officer
    • A.8 Transparency toward customers

      • A.8.1 Disclosing sub-processors

        Customers are told which sub-processors will handle their PII before processing begins.

        • Processor Data Protection Agreements
        • Third-Party Criticality Assessments
        • Publishing Security & Privacy Documentation
        • Contractual Obligations Register
    • A.10 Accountability to customers

      • A.10.1 Breach notification to customers

        The provider promptly notifies the affected customer of any unauthorized access to its PII and keeps a record of each such incident.

        • Breach Risk Assessment & Notification
        • PII Breach Notification Guidelines
        • Data Breach Notification Policy
        • Incident Management Policy & Procedure
      • A.10.2 Keeping superseded security policies

        Copies of security policies and procedures are kept for a defined period after they are replaced.

        • Policy Documentation Retention
        • Data Retention Policy
      • A.10.3 Returning, transferring and disposing of PII

        The provider has a policy for returning, transferring or securely destroying customer PII and makes it known to customers.

        • Data Retention Policy
        • Media Disposal Policy
        • Contractual Obligations Register
    • A.11 Security of PII

      • A.11.1 Confidentiality duties for staff

        Everyone who can access customer PII is bound by a confidentiality obligation.

        • New Hire Policy Acknowledgement
        • Periodic Policy Acknowledgement
        • Code of Business Conduct
      • A.11.2 Limiting printed copies

        Printing or otherwise producing hardcopies of customer PII is restricted.

        • Clear Desk & Clear Screen
        • Data Classification Policy
        • Rules of Behavior
      • A.11.3 Logging data restoration

        Restoring data from backup is authorized and recorded.

        • Backup Restoration Testing
        • Centralized Security Logging
        • Data Backups
      • A.11.4 Protecting media leaving the premises

        Storage media holding PII that leave the provider's premises are authorized, protected and tracked.

        • Endpoint Encryption
        • Media Disposal Policy
        • Endpoint Security Policy
      • A.11.5 Avoiding unencrypted portable media

        Portable storage without encryption is not used for customer PII, except where unavoidable and then documented.

        • Endpoint Encryption
        • Endpoint Security Policy
        • Rules of Behavior
      • A.11.6 Encrypting PII on public networks

        PII sent over public networks is encrypted.

        • Transmission Confidentiality
        • Encryption Policy & Procedure
      • A.11.7 Destroying hardcopy securely

        Paper and other hardcopy containing PII is destroyed securely, for example by cross-cut shredding.

        • Media Disposal Policy
        • Clear Desk & Clear Screen
      • A.11.8 Individual user IDs

        Each person who accesses customer PII does so under their own user ID.

        • Identity Validation
        • User Access Reviews
      • A.11.9 Managing user IDs

        User IDs are issued, disabled and removed in a controlled way, and disabled IDs are not handed to someone else.

        • Identity Validation
        • Termination of Employment
        • User Access Reviews
      • A.11.10 Register of authorized users

        An up-to-date record shows who may access systems holding customer PII and with which rights.

        • User Access Reviews
        • Production System Access Review
        • User Privilege Reviews
      • A.11.11 Security commitments in customer contracts

        Customer contracts state the minimum security measures the provider maintains for the customer's PII.

        • Processor Data Protection Agreements
        • Contractual Obligations Register
        • Vendor Management Policy & Procedure
      • A.11.12 Sub-processor obligations

        Sub-processors are bound by contract to protect customer PII to at least the provider's own standard.

        • Processor Data Protection Agreements
        • Third-Party Criticality Assessments
        • Management Review of Third-Party Risks
        • Vendor Management Policy & Procedure
      • A.11.13 Clearing reused storage

        Storage space assigned to a customer cannot reveal data left behind by a previous user.

        • Media Disposal Policy
        • Tenant Isolation
        • Encryption of Data at Rest
    • A.12 Where PII is stored and sent

      • A.12.1 Disclosing where PII is stored

        Customers are told the countries in which their PII may be stored or processed.

        • Cross-Border Data Transfers
        • Publishing Security & Privacy Documentation
        • Contractual Obligations Register
      • A.12.2 Delivery to the intended destination

        PII sent across networks is routed so that it reaches only its intended destination.

        • Transmission Confidentiality
        • External System Connections
        • Network Security Policy & Procedure