Frameworks · Global
ISO 27017:2026
ISO/IEC 27017 is the code of practice for information security in cloud services. It takes every ISO/IEC 27002:2022 control and adds guidance for cloud service customers and cloud service providers where the cloud changes how the control is applied, and introduces four cloud-only controls covering shared responsibilities, cloud service partners, isolation in virtual environments and detection of unauthorized cloud use. It is usually certified as an extension of an ISO/IEC 27001 ISMS and is often requested by customers of SaaS, PaaS and IaaS providers.
- Version
- ISO/IEC 27017:2026
- Requirements
- 101, each mapped to ProofTrail’s controls
Requirements and controls
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5 Organization-level controls
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5.1 Security policies and topic-specific policies
The security policy set covers cloud computing: as a cloud customer the organization states how cloud services may be used, and as a provider it defines the security rules its service follows for tenants.
- Security Governance Program
- Information Security & Privacy Policies
- Management Review of Policies
- Periodic Policy Acknowledgement
- Shared Responsibility Model
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5.2 Security roles and duties
Security responsibilities for using or providing cloud services are defined, assigned to named roles and made known to the people who hold them.
- Assigned Security & Privacy Responsibilities
- Roles & Responsibilities
- Cybersecurity Responsibilities
- Compliance Program Manager
- People Operations Owner
- Shared Responsibility Model
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5.3 Separating conflicting duties
Conflicting duties are split in cloud administration as elsewhere, so no single administrator can both make and approve a sensitive change.
- Segregation of Duties
- Organizational Structure
- Roles & Responsibilities
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5.4 Management's security responsibilities
Managers require the staff and contractors who administer or use cloud services to follow the organization's security policies and procedures.
- Security & Privacy Program Review
- Periodic Policy Acknowledgement
- New Hire Security & Privacy Training
- Periodic Security & Privacy Training
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5.5 Liaison with authorities
The organization knows which authorities have jurisdiction over its cloud services and the data in them, including where its providers operate, and keeps a way to reach them.
- Cybersecurity Responsibilities
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5.6 Liaison with specialist security groups
The organization follows cloud security forums and specialist groups to keep up with cloud-specific threats and good practice.
- Cybersecurity Responsibilities
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5.7 Threat intelligence gathering
Threat information relevant to the cloud platforms the organization uses or offers is collected, analyzed and turned into protective action.
- Anomalous Behavior Detection
- Centralized Security Logging
- Vulnerability Remediation Process
- Incident Management Policy & Procedure
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5.8 Security in projects
Projects that adopt or change cloud services consider security from the start, including how responsibilities are split with the provider.
- Risk Assessment
- Change Management Policy & Procedure
- Approval of Changes
- Shared Responsibility Model
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5.9 Asset and information inventory
The inventory covers assets held in the cloud, such as accounts, virtual machines, storage and customer data, and names an owner for each.
- Inventory of Infrastructure Assets
- Inventory of Endpoint Assets
- Asset Inventory Updates
- Asset Ownership Assignment
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5.10 Rules for acceptable use of assets
Acceptable use rules extend to cloud resources and the data they hold, and customers know what use of the service is permitted.
- Rules of Behavior
- Endpoint Security Policy
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5.11 Returning assets
When a cloud service ends, customer data and other assets are returned or removed on agreed terms, and the provider documents how and when that happens.
- Human Resources Policy & Procedure
- Inventory of Endpoint Assets
- Data Retention Policy
- Contractual Obligations Register
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5.12 Information classification
Information placed in cloud services is classified, and the classification decides which services and safeguards may be used for it.
- Data Classification Policy
- Data Classification Labels
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5.13 Information labels
Classification labels are applied to data and resources held in cloud services so that handling rules remain visible.
- Data Classification Labels
- Data Classification Policy
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5.14 Transferring information
Data moving to, from or between cloud services is protected in transit and covered by agreed transfer rules.
- Transmission Confidentiality
- Network Security Policy & Procedure
- Third-Party Criticality Assessments
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5.15 Access control rules
Access rules cover cloud consoles, APIs and stored data, and the provider's access features are used to enforce them.
- Access Control Policy & Procedure
- Identity Validation
- Production Database Access Restriction
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5.16 Managing identities
Identities used with cloud services, including administrator and service accounts, are created, changed and removed through a controlled process.
- Identity Validation
- User Access Reviews
- Termination of Employment
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5.17 Managing authentication secrets
Passwords, keys and other secrets used to reach cloud services are issued, stored and rotated securely.
- Password Management Guidelines
- Multi-Factor Authentication
- Access Control Policy & Procedure
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5.18 Granting and reviewing access rights
Access rights to cloud services are granted by role, reviewed periodically and withdrawn when no longer needed, using the provider's access management functions.
- Access Control Policy & Procedure
- Identity Validation
- User Privilege Reviews
- User Access Reviews
- Production System Access Review
- Termination of Employment
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5.19 Supplier security
Cloud providers are managed as suppliers: their security is assessed before adoption and kept under review for the life of the relationship.
- Vendor Management Policy & Procedure
- Third-Party Criticality Assessments
- Management Review of Third-Party Risks
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5.20 Security terms in supplier agreements
Agreements with cloud providers record security commitments, the split of responsibilities, service levels, data location and how data is handed back at exit.
- Vendor Management Policy & Procedure
- Third-Party Criticality Assessments
- Subservice Organization Evaluation
- Contractual Obligations Register
- Shared Responsibility Model
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5.21 ICT supply chain security
Security expectations flow down the cloud supply chain, including to the providers that a cloud service itself depends on.
- Vendor Management Policy & Procedure
- Third-Party Criticality Assessments
- Subservice Organization Evaluation
- Management Review of Third-Party Risks
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5.22 Supplier service monitoring and change
The organization monitors its cloud providers against their commitments and assesses the impact of service changes they announce.
- Management Review of Third-Party Risks
- Third-Party Criticality Assessments
- Subservice Organization Evaluation
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5.23 Security of cloud service use
The organization governs how cloud services are chosen, used, operated and exited so they meet its security requirements.
- Vendor Management Policy & Procedure
- Shared Responsibility Model
- Subservice Organization Evaluation
- Third-Party Criticality Assessments
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5.24 Incident response planning
Customer and provider agree in advance who does what during an incident, including how each side reports events that affect the cloud service.
- Incident Management Policy & Procedure
- Incident Tracking
- Automated Incident Reporting
- Incident Reporting Assistance
- Shared Responsibility Model
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5.25 Triage of security events
Security events in cloud services are assessed to decide whether they are incidents, drawing on information from both the organization and its provider.
- Incident Management Policy & Procedure
- Incident Tracking
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5.26 Responding to incidents
Incidents involving cloud services are contained and resolved under agreed procedures, with customer and provider coordinating where needed.
- Incident Management Policy & Procedure
- Incident Tracking
- Breach Risk Assessment & Notification
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5.27 Lessons from incidents
Lessons from cloud-related incidents are used to strengthen controls on both sides of the shared responsibility split.
- Incident Management Policy & Procedure
- Incident Tracking
- Security & Privacy Program Review
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5.28 Evidence collection
Logs, snapshots and other evidence about incidents in cloud environments can be collected and preserved, including from the provider when required.
- Incident Management Policy & Procedure
- Centralized Security Logging
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5.29 Security during disruption
Security is maintained while cloud services are disrupted, for example during failover between regions or providers.
- Business Continuity Policy & Procedure
- Disaster Recovery Policy
- Disaster Recovery Testing
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5.30 ICT readiness for continuity
Cloud service levels, backup and failover capabilities are checked against the organization's recovery time and recovery point objectives.
- Disaster Recovery Policy
- Business Continuity Policy & Procedure
- Disaster Recovery Testing
- Backup Restoration Testing
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5.31 Legal, regulatory and contractual obligations
Laws and contract terms that apply to cloud processing, including the jurisdictions where data is stored, are identified and met.
- Data Governance
- Statutory, Regulatory & Contractual Compliance
- Contractual Obligations Register
- Cross-Border Data Transfers
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5.32 Intellectual property
Software licences and other intellectual property are respected when software runs in, or is delivered as, a cloud service.
- Statutory, Regulatory & Contractual Compliance
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5.33 Protecting records
Records kept in cloud services are protected against loss, tampering and unauthorized access for their full retention period.
- Policy Documentation Retention
- Data Retention Policy
- Statutory, Regulatory & Contractual Compliance
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5.34 Privacy and PII obligations
Personal data processed in cloud services is protected in line with privacy law and contractual commitments.
- Data Protection Policy & Procedure
- Privacy Officer
- Privacy by Design Policy
- Personal Data Inventory
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5.35 Independent security review
Cloud security arrangements are reviewed independently, and providers back their claims with independent audit reports or certifications.
- Internal Audit
- Security & Privacy Program Review
- Penetration Testing
- Subservice Organization Evaluation
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5.36 Conformance with security policies
Compliance with the security rules for using and providing cloud services is checked regularly.
- Internal Audit
- Management Review of Policies
- Statutory, Regulatory & Contractual Compliance
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5.37 Written operating procedures
Procedures for administering cloud services, especially operations that are risky or hard to undo, are written down and available to the people who perform them.
- Information Security & Privacy Policies
- ISMS Manual
- Change Management Policy & Procedure
- Data Backup Policy
- Deployment Notifications
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5.38 Shared cloud security responsibilities
Customer and provider identify, document, communicate and carry out their respective security responsibilities for the cloud service.
- Shared Responsibility Model
- Contractual Obligations Register
- Subservice Organization Evaluation
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5.39 Cloud service partner responsibilities
When a cloud service partner such as a broker, integrator or auditor is involved, its security roles and responsibilities are agreed with the customer and the provider.
- Shared Responsibility Model
- Contractual Obligations Register
- Vendor Management Policy & Procedure
- Third-Party Criticality Assessments
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6 Controls for people
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6.1 Background screening
People who administer cloud services or can reach customer data are screened in proportion to the sensitivity of that access.
- Personnel Screening
- Competency Screening
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6.2 Employment terms
Employment terms make cloud-related security duties, including protecting customer data, part of each person's obligations.
- Code of Business Conduct
- New Hire Policy Acknowledgement
- Human Resources Policy & Procedure
- Roles & Responsibilities
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6.3 Security awareness and training
Staff are trained on the secure use or administration of the cloud services that relate to their roles.
- Security & Privacy Awareness
- New Hire Security & Privacy Training
- Periodic Security & Privacy Training
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6.4 Disciplinary action for breaches
Breaches of cloud security rules are handled through the formal disciplinary process.
- Code of Business Conduct
- Human Resources Policy & Procedure
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6.5 Duties after leaving or changing role
Cloud access and duties are adjusted or removed when someone leaves or changes role, and confidentiality obligations continue afterwards.
- Human Resources Policy & Procedure
- Termination of Employment
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6.6 Confidentiality agreements
Confidentiality agreements cover information held in, or learned through, cloud services.
- New Hire Policy Acknowledgement
- Periodic Policy Acknowledgement
- Contractual Obligations Register
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6.7 Remote work security
People who reach cloud services from outside the office do so from protected devices and connections.
- Endpoint Security Policy
- Endpoint Encryption
- Multi-Factor Authentication
- Session Lock
- Malware Protection
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6.8 Reporting security events
Staff, customers and providers have channels to report security events affecting cloud services quickly.
- Automated Incident Reporting
- Incident Reporting Assistance
- Incident Management Policy & Procedure
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7 Controls for premises and equipment
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7.1 Physical perimeters
Facilities hosting cloud services have defined secure perimeters; customers rely on provider assurance for data center perimeters.
- Physical Protection Policy & Procedure
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7.2 Controlled physical entry
Entry to areas housing cloud infrastructure is limited to authorized people.
- Physical Protection Policy & Procedure
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7.3 Securing offices and facilities
Offices and rooms used to manage cloud services are physically secured.
- Physical Protection Policy & Procedure
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7.4 Monitoring of premises
Premises that host cloud infrastructure are watched for unauthorized physical access.
- Physical Protection Policy & Procedure
- Subservice Organization Evaluation
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7.5 Physical and environmental threats
Cloud infrastructure is protected against fire, flood, power loss and other physical or environmental hazards.
- Physical Protection Policy & Procedure
- Business Continuity Policy & Procedure
- Disaster Recovery Policy
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7.6 Work in secure areas
Rules govern work inside secure areas where cloud infrastructure is located.
- Physical Protection Policy & Procedure
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7.7 Clearing desks and screens
Desks and screens used to administer cloud services are kept free of exposed sensitive information.
- Clear Desk & Clear Screen
- Session Lock
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7.8 Equipment placement and protection
Equipment supporting cloud services is placed and protected to reduce physical risk.
- Physical Protection Policy & Procedure
- Endpoint Security Policy
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7.9 Assets used off-site
Devices used to administer cloud services away from the office are protected.
- Endpoint Security Policy
- Endpoint Encryption
- Inventory of Endpoint Assets
- Malware Protection
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7.10 Storage media handling
Storage media holding cloud data are tracked through their life and sanitized before reuse or disposal.
- Media Disposal Policy
- Endpoint Encryption
- Data Classification Policy
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7.11 Utility services
Power and other utilities that cloud infrastructure depends on are protected against failure.
- Physical Protection Policy & Procedure
- Subservice Organization Evaluation
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7.12 Cabling protection
Power and data cabling for cloud infrastructure is protected against interception and damage.
- Physical Protection Policy & Procedure
- Subservice Organization Evaluation
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7.13 Maintaining equipment
Cloud infrastructure equipment is maintained so that it stays available and secure.
- Endpoint Security Validation
- Endpoint Security Policy
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7.14 Disposal and reuse of equipment
Equipment that held cloud data is wiped or destroyed securely before it is disposed of or reused.
- Media Disposal Policy
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8 Technology controls
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8.1 Endpoint devices
Devices used to reach or administer cloud services meet the organization's endpoint security baseline.
- Endpoint Security Policy
- Malware Protection
- Endpoint Security Validation
- Endpoint Encryption
- Session Lock
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8.2 Privileged access
Privileged access to cloud management interfaces is kept to a minimum, strongly authenticated and reviewed.
- Production Database Access Restriction
- User Privilege Reviews
- Multi-Factor Authentication
- Access Control Policy & Procedure
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8.3 Restricting access to information
Access to data held in cloud services is restricted to what each role needs, using the access controls the service offers.
- Access Control Policy & Procedure
- Identity Validation
- Production Database Access Restriction
- User Access Reviews
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8.4 Source code access
Access to source code and infrastructure-as-code stored in cloud repositories is controlled.
- Identity Validation
- User Privilege Reviews
- Secure System Modification
- Approval of Changes
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8.5 Authentication mechanisms
Cloud services are reached through strong authentication, with multi-factor authentication for administrators.
- Multi-Factor Authentication
- Password Management Guidelines
- Cloud Console Session Timeout
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8.6 Capacity planning
Cloud resource usage is monitored and planned so services keep up with demand.
- Capacity & Performance Management
- Impact Analysis
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8.7 Malware protection
Malware protection covers cloud workloads and the endpoints used to reach them.
- Malware Protection
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8.8 Technical vulnerability management
Vulnerabilities in cloud workloads and services are found and fixed, with remediation duties split according to the service model.
- Vulnerability Remediation Process
- Centralized Flaw Remediation
- Penetration Testing
- Vulnerability Management Policy & Procedure
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8.9 Secure configuration
Cloud resources follow secure configuration baselines, and configuration drift is detected and corrected.
- External System Connections
- Endpoint Security Validation
- Endpoint Security Policy
- Impact Analysis
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8.10 Deleting information
Data held in cloud services is deleted when no longer needed, and the provider confirms deletion of customer data when the service ends.
- Data Retention Policy
- Media Disposal Policy
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8.11 Masking data
Sensitive data in cloud services is masked or pseudonymized where the risk calls for it.
- Test Data Protection
- Data Classification Policy
- Encryption Policy & Procedure
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8.12 Preventing data leakage
Measures detect and prevent unauthorized disclosure of data out of cloud services.
- Data Classification Policy
- Transmission Confidentiality
- Endpoint Encryption
- Encryption of Data at Rest
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8.13 Backups
Backups of cloud data are taken, protected and tested, and the backup duties of customer and provider are clearly divided.
- Data Backup Policy
- Data Backups
- Backup Restoration Testing
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8.14 Redundant processing facilities
Cloud services are deployed with enough redundancy, such as several zones or regions, to meet availability needs.
- Data Backups
- Business Continuity Policy & Procedure
- Disaster Recovery Policy
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8.15 Logging activity
Activity in cloud services is logged, and customers can obtain the logs they need to investigate events.
- Centralized Security Logging
- Anomalous Behavior Detection
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8.16 Monitoring for anomalies
Cloud services are monitored for anomalous behavior, and customers have the means to monitor their own use of the service.
- Anomalous Behavior Detection
- Centralized Security Logging
- Capacity & Performance Management
- Unauthorized Activity Monitoring
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8.17 Time synchronization
Clocks across cloud and on-premises systems are synchronized so log timestamps can be correlated.
- Clock Synchronization
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8.18 Powerful utility programs
Utility programs that can override cloud system controls are restricted and their use is monitored.
- User Privilege Reviews
- Production Database Access Restriction
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8.19 Software installation on production systems
Software installation on cloud workloads is controlled.
- Approval of Changes
- Endpoint Security Policy
- Rules of Behavior
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8.20 Network protection
Virtual and physical networks supporting cloud services are protected and managed under consistent security rules.
- External System Connections
- Limit Network Connections
- Network Security Policy & Procedure
- Transmission Confidentiality
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8.21 Network service security
The security features and service levels of cloud network services are identified and monitored.
- External System Connections
- Network Security Policy & Procedure
- Network & Data Flow Diagrams
- Subservice Organization Evaluation
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8.22 Network segmentation
Cloud networks are segmented, for example between tenants, environments and administrative interfaces.
- Limit Network Connections
- External System Connections
- Network Security Policy & Procedure
- Network & Data Flow Diagrams
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8.23 Filtering web access
Web access from cloud workloads and administrator devices is filtered to reduce exposure to malicious content.
- Malware Protection
- Endpoint Security Policy
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8.24 Cryptography
Data in cloud services is encrypted where needed, and it is clear whether the customer or the provider manages each key.
- Encryption Policy & Procedure
- Encryption of Data at Rest
- Transmission Confidentiality
- Endpoint Encryption
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8.25 Secure development process
Cloud services, and applications built on them, are developed under a secure development process.
- Change Management Policy & Procedure
- Secure System Modification
- Approval of Changes
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8.26 Security requirements for applications
Security requirements for applications hosted in or offered as cloud services are identified and specified.
- Change Management Policy & Procedure
- Input Range Validation
- Mandatory Field Validation
- Vulnerability Remediation Process
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8.27 Secure architecture and engineering
Cloud architectures are designed on secure engineering principles such as least privilege and defense in depth.
- Change Management Policy & Procedure
- Network & Data Flow Diagrams
- Privacy by Design Policy
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8.28 Secure coding practices
Code deployed to cloud services follows secure coding practices.
- Change Management Policy & Procedure
- Approval of Changes
- Input Range Validation
- Vulnerability Remediation Process
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8.29 Security testing before release
Cloud applications and infrastructure changes are security tested before release.
- Approval of Changes
- Regression Testing
- Penetration Testing
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8.30 Supervising outsourced development
Outsourced development of cloud services or workloads is supervised and held to the organization's security requirements.
- Vendor Management Policy & Procedure
- Third-Party Criticality Assessments
- Change Management Policy & Procedure
- Approval of Changes
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8.31 Separate development, test and production
Development, test and production environments in the cloud are kept apart, for example in separate accounts or projects.
- Test Data Protection
- Secure System Modification
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8.32 Change control
Changes to cloud services and configurations follow change control, and customers are told about changes that affect them.
- Change Management Policy & Procedure
- Secure System Modification
- Approval of Changes
- Deployment Notifications
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8.33 Test data
Test data used in cloud environments is chosen and protected so that production personal data is not exposed.
- Test Data Protection
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8.34 Protecting systems during audits
Audit and testing work in cloud environments is planned so it does not disrupt services or expose other tenants.
- Internal Audit
- Penetration Testing
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8.35 Isolation in virtualized environments
Each tenant's virtual resources, data and workloads are isolated from other tenants and from the provider's internal systems.
- Tenant Isolation
- Limit Network Connections
- External System Connections
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8.36 Detecting unauthorized cloud use
Use of cloud services is monitored to detect and stop unauthorized use, such as unapproved services, leaked credentials or abuse of accounts.
- Anomalous Behavior Detection
- Centralized Security Logging
- Third-Party Criticality Assessments
- Unauthorized Activity Monitoring
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