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ISO 27001:2022 Technical Audit Checklist: Complete Annex A Domain 8 Framework
Master your technical compliance with our ultimate ISO 27001:2022 Annex A Domain 8 audit checklist. Exhaustive criteria across all 26 technological controls.
ISO 27001 CHECKLIST
ISO 27001 Institute
8/5/202612 min read
ISO 27001:2022 Technological Controls Audit Checklist: The Complete Annex A Domain 8 Blueprint
The transition to the ISO/IEC 27001:2022 standard consolidated technical security requirements into a unified framework: Annex A Domain 8 (Technological Controls).
Covering 26 distinct control areas, Domain 8 requires IT auditors, CISOs, and compliance managers to verify the operational integrity, architecture, and security posture of enterprise IT environments.
This comprehensive, long-form pillar post breaks down every single technological control under ISO 27001:2022 Annex A Domain 8—providing exact audit criteria, technical verification procedures, and mandatory evidence artifacts.
To jumpstart your audit execution with pre-formatted spreadsheets and automated scoring tools, access our production-ready IT Security Audit Checklist Template directly on iso27001.institute.
ISO 27001:2022 Domain 8 Technological Control Architecture
Domain 1: Endpoint, Access & Identity Security
Annex A 8.1 — User Endpoint Devices
Objective: Ensure endpoint devices (laptops, desktops, mobile devices, workstations) protecting corporate information are registered, managed, and baseline-hardened.
Audit Check Criteria:
Is a centralized Mobile Device Management (MDM) or Enterprise Mobility Management (EMM) platform active across 100% of corporate endpoints?
Is full disk encryption (e.g., BitLocker, FileVault) mandatory, with recovery keys securely escrowed in a centralized vault?
Are corporate devices configured to lock automatically after a maximum of 10 minutes of inactivity?
Is peripheral control enforced to block or strictly log unauthorized USB mass storage devices?
Evidence Artifacts: MDM deployment reports, BitLocker/FileVault encryption status logs, Group Policy Objects (GPO) for auto-lock timeouts.
Annex A 8.2 — Privileged Access Rights
Objective: Restrict and control the allocation and use of privileged access rights across OS, network, cloud, and application layers.
Audit Check Criteria:
Is the principle of least privilege strictly enforced, granting administrative access based on verified business need?
Are Privileged Access Management (PAM) tools utilized to manage, rotate, and vault domain admin, root, and service account credentials?
Are privileged sessions logged and recorded for critical infrastructure components?
Are privileged access rights formally reviewed at least bi-annually?
Evidence Artifacts: PAM session logs, bi-annual privileged access entitlement review sign-offs, active Domain Admin list exports.
Annex A 8.3 — Information Access Restriction
Objective: Limit access to information and application system functions in accordance with the established access control policy.
Audit Check Criteria:
Is Role-Based Access Control (RBAC) or Attribute-Based Access Control (ABAC) implemented across critical business applications?
Are default system accounts, demo databases, and vendor default passwords disabled or removed upon commissioning?
Is network-level or application-level access restricted based on IP whitelisting or Zero Trust Network Access (ZTNA) policies?
Evidence Artifacts: RBAC configuration matrices, firewall access control lists (ACLs), user permission audit logs.
Annex A 8.5 — Secure Authentication
Objective: Ensure secure authentication technologies and procedures control user identity verification.
Audit Check Criteria:
Is Multi-Factor Authentication (MFA) mandatorily enforced for all remote access, VPNs, cloud consoles, and SaaS applications?
Are passwordless authentication mechanisms or strong password parameters (minimum 14 characters, check against compromised password lists) implemented?
Do authentication systems protect against brute-force attacks via progressive account lockouts or CAPTCHA enforcement?
Evidence Artifacts: MFA enforcement policy configurations, Identity Provider (IdP) authentication log exports, lockout policy settings.
Annex A 8.18 — Use of Privileged Utility Programs
Objective: Control and strictly restrict the use of utility programs that might be capable of overriding system and application controls.
Audit Check Criteria:
Is a formal inventory maintained of all authorized utility programs (e.g., registry editors, disk formatters, packet sniffers)?
Are privileged utility programs restricted exclusively to authorized system administrators?
Is the execution of ad-hoc administrative tools logged and monitored in real time via Endpoint Detection and Response (EDR)?
Evidence Artifacts: Inventory of approved utility programs, EDR execution logs, privilege elevation request tickets.
Domain 2: Data Protection, Cryptography & Storage Security
Annex A 8.10 — Information Deletion
Objective: Ensure information stored in information systems, devices, or any other storage media is deleted securely when no longer required.
Audit Check Criteria:
Are standardized data retention and disposal schedules defined and operationally enforced across databases and cloud storage?
Is cryptographic erasure (Crypto-Shredding) or logical overwrite utilized for cloud storage buckets, virtual disks, and database records?
Are physical storage media (HDDs, SSDs, backup tapes) sanitized or physically destroyed according to NIST SP 800-88 guidelines before disposal?
Evidence Artifacts: Certificates of physical media destruction, automated cloud retention rule configurations, crypto-shredding logs.
Annex A 8.11 — Data Masking
Objective: Limit the exposure of sensitive data, including Personally Identifiable Information (PII), through data masking, pseudonomization, or anonymization.
Audit Check Criteria:
Is dynamic or static data masking applied to sensitive fields (e.g., credit card numbers, social security numbers) in user interfaces?
Are non-production environments (Development, Staging, QA) strictly populated with masked or synthetic data sets?
Are data masking algorithms cryptographically secure, preventing reverse-engineering without authorized key access?
Evidence Artifacts: Database masking scripts, QA environment data sampling reports, masking configuration documentation.
Annex A 8.12 — Data Leakage Prevention (DLP)
Objective: Apply data leakage prevention measures to systems, networks, and endpoints that process, store, or transmit sensitive information.
Audit Check Criteria:
Is an enterprise Data Leakage Prevention (DLP) solution deployed across endpoints, cloud storage, email gateways, and web traffic?
Are DLP rules configured to detect and block unauthorized outbound transfers of sensitive data (e.g., source code, financial records, customer PII)?
Are DLP alert spikes investigated and documented by the Security Operations Center (SOC)?
Evidence Artifacts: DLP policy rule definitions, incident resolution logs for blocked data exfiltration attempts, DLP console coverage reports.
Annex A 8.13 — Information Backup
Objective: Maintain and regularly test backup copies of information, software, and system images to protect against data loss.
Audit Check Criteria:
Are backup schedules (full, differential, incremental) defined and automated in alignment with Recovery Point Objectives (RPO)?
Are backup copies stored in an isolated, immutable environment (or air-gapped) to protect against ransomware encryption?
Are technical restoration tests conducted and documented at least semi-annually for critical business databases and system images?
Evidence Artifacts: Automated backup job execution logs, immutability setting verifications, documented backup restoration drill reports.
Annex A 8.24 — Use of Cryptography
Objective: Ensure proper and effective use of cryptography, including key management, to protect the confidentiality, authenticity, and integrity of information.
Audit Check Criteria:
Are industry-standard encryption algorithms enforced for data at rest (e.g., AES-256) and data in transit (e.g., TLS 1.3)?
Is a centralized Key Management Service (KMS) or Hardware Security Module (HSM) used to store, rotate, and manage cryptographic keys?
Are deprecated cryptographic protocols (e.g., SSL v3, TLS 1.0, TLS 1.1, MD5, SHA-1) disabled across all internal and public servers?
Evidence Artifacts: SSL/TLS cipher suite scan reports, KMS key rotation logs, cryptographic policy documentation.
Domain 3: Infrastructure, Network & Capacity Security
Annex A 8.6 — Capacity Management
Objective: Monitor and project the use of resources to ensure required system performance and storage capacity.
Audit Check Criteria:
Are key system resource metrics (CPU utilization, RAM, disk space, network bandwidth) monitored continuously with automated threshold alerts?
Are capacity trends analyzed quarterly to anticipate future infrastructure scaling requirements?
Are auto-scaling policies active within cloud environments to handle unexpected traffic spikes automatically?
Evidence Artifacts: Monitoring dashboard configurations (e.g., Datadog, Prometheus, CloudWatch), capacity planning review minutes, auto-scale logs.
Annex A 8.14 — Redundancy of Information Processing Facilities
Objective: Ensure information processing facilities meet redundancy requirements to satisfy availability demands.
Audit Check Criteria:
Are high-availability (HA) architectures deployed across critical infrastructure (e.g., multi-region cloud deployment, redundant firewalls, load balancers)?
Are uninterruptible power supplies (UPS) and backup generator systems tested annually for physical data centers?
Is automated failover tested to verify that Recovery Time Objectives (RTO) are achieved without data corruption?
Evidence Artifacts: High Availability architecture diagrams, automated failover test logs, physical data center maintenance reports.
Annex A 8.20 — Networks Security
Objective: Secure and manage networks and network devices to protect information in systems and applications.
Audit Check Criteria:
Are network infrastructure devices (switches, routers, firewalls, wireless access points) baseline-hardened according to vendor/CIS guidelines?
Are management interfaces of network appliances restricted exclusively to dedicated, isolated administrative VLANs?
Are firewall rulebases formally reviewed bi-annually to identify and remove obsolete or overly permissive rules?
Evidence Artifacts: Firewall rule review sign-offs, network device baseline configuration templates, SSH management access logs.
Annex A 8.21 — Security of Network Services
Objective: Identify, monitor, and require security mechanisms, service levels, and management requirements for all network services.
Audit Check Criteria:
Are Service Level Agreements (SLAs) and security controls defined for all third-party network service providers (ISPs, SD-WAN, managed firewalls)?
Is intrusion prevention/detection (IPS/IDS) active across all network boundary points with updated threat intelligence feeds?
Is external network traffic routed through Web Application Firewalls (WAF) and DDoS mitigation services?
Evidence Artifacts: Network service provider SLAs, IPS/IDS threat blocking reports, WAF security profile logs.
Annex A 8.22 — Segregation of Networks
Objective: Segregate groups of information services, users, and information systems on corporate networks.
Audit Check Criteria:
Is the corporate network micro-segmented into distinct, firewalled zones (e.g., Production, Staging, Corporate Office, DMZ, IoT, Guest Wi-Fi)?
Are wireless networks segregated, ensuring guest Wi-Fi users have zero routing access to corporate internal networks?
Is lateral movement between network segments blocked by default and permitted only via explicit, documented business exceptions?
Evidence Artifacts: Network architecture topology diagrams, VLAN routing tables, inter-VLAN firewall rule configurations.
Domain 4: Security Operations, Vulnerabilities & Logging
Annex A 8.7 — Protection Against Malware
Objective: Ensure protection against malware is supported by appropriate awareness and technical detection/prevention controls.
Audit Check Criteria:
Is Next-Generation Anti-Virus (NGAV) or Endpoint Detection and Response (EDR) deployed on 100% of servers, endpoints, and virtual machines?
Are malware signature definitions and behavior detection engines updated automatically in real time?
Are email gateways configured to scan inbound attachments and sand-box suspicious links before delivery?
Evidence Artifacts: EDR console status dashboard exports, email gateway sandboxing logs, malware incident resolution records.
Annex A 8.8 — Management of Technical Vulnerabilities
Objective: Obtain information about technical vulnerabilities of information systems in use, evaluate exposure, and take appropriate measures.
Audit Check Criteria:
Are automated vulnerability scans executed at least monthly across external endpoints, internal networks, and cloud assets?
Are technical vulnerabilities remediated within strictly enforced SLAs (e.g., Critical: 7 days, High: 14 days, Medium: 30 days)?
Are annual external and internal penetration tests performed by qualified, independent security assessors?
Evidence Artifacts: Monthly vulnerability scan reports, penetration test executive summaries, vulnerability remediation ticket logs.
Annex A 8.9 — Configuration Management
Objective: Establish, document, implement, monitor, and review configurations, including security configurations, of hardware, software, services, and networks.
Audit Check Criteria:
Are standardized security baseline configurations (e.g., CIS Benchmarks, DISA STIGs) documented for all OS, cloud, and network assets?
Is Infrastructure as Code (IaC) or Configuration Management tools (Ansible, Puppet, Chef, Terraform) used to enforce baseline drift prevention?
Are configuration changes tracked, approved, and audited via formal Change Management tickets?
Evidence Artifacts: CIS Benchmark assessment outputs, IaC template repositories, configuration change approval records.
Annex A 8.15 — Logging
Objective: Produce, store, protect, and analyze event logs that record activities, exceptions, faults, and security-relevant events.
Audit Check Criteria:
Is centralized log collection implemented, forwarding system, application, audit, and network logs to a Security Information and Event Management (SIEM) system?
Are event logs protected against tampering or unauthorized deletion through strict write-once-read-many (WORM) storage permissions?
Are security logs retained for a minimum of 90 days active online and 365 days in cold archive?
Evidence Artifacts: SIEM log ingestion configuration reports, storage bucket immutability logs, log retention policy documents.
Annex A 8.16 — Monitoring Activities
Objective: Monitor systems for anomalous behavior and evaluate events to identify potential information security incidents.
Audit Check Criteria:
Are automated alert rules configured within the SIEM/SOC platform to detect suspicious activities (e.g., impossible travel, brute force, lateral movement)?
Is 24/7/365 security monitoring established via an internal SOC or Managed Detection and Response (MDR) provider?
Are high-severity security alerts investigated and triaged within defined SLA windows (e.g., 15 minutes)?
Evidence Artifacts: SIEM correlation rule lists, SOC alert triage resolution tickets, MDR monthly operational reports.
Annex A 8.17 — Clock Synchronization
Objective: Synchronize the clocks of all relevant information processing systems within an organization or security domain.
Audit Check Criteria:
Are all domain controllers, servers, network appliances, and security tools synchronized to an accurate Network Time Protocol (NTP) time source (e.g., Stratum 1/2)?
Is UTC enforced across all system log timestamps to maintain event sequence integrity during incident investigations?
Are clock drift alerts configured to trigger if system time deviates by more than 1 second from the NTP server?
Evidence Artifacts: NTP configuration outputs across domain controllers and appliances, clock drift monitoring alerts.
Annex A 8.19 — Installation of Software on Operational Systems
Objective: Establish and implement procedures to securely control the installation of software on operational systems.
Audit Check Criteria:
Are end-users restricted from installing unapproved third-party software on endpoints via application whitelisting or non-admin privileges?
Is software deployment to production servers managed strictly via automated CI/CD deployment pipelines or IT change control?
Is an inventory of installed software periodically audited against authorized application catalogues to detect Shadow IT?
Evidence Artifacts: Application control policy settings, endpoint software inventory exports, change management deployment logs.
Domain 5: Secure Application Lifecycle & Technical Engineering
Annex A 8.4 — Access to Source Code
Objective: Control and strictly manage read and write access to program source code and associated items (e.g., designs, specifications).
Audit Check Criteria:
Is access to central source code repositories (GitHub, GitLab, Bitbucket) restricted via strict role-based permissions and mandatory MFA?
Is direct push to main/master production code branches blocked, requiring at least one peer code review approval?
Are developer workstations prevented from storing unencrypted local copies of proprietary source code?
Evidence Artifacts: Code repository access control exports, branch protection rule configurations, pull request review logs.
Annex A 8.26 — Application Security Requirements
Objective: Identify, specify, and approve information security requirements when developing or acquiring applications.
Audit Check Criteria:
Are security requirements (e.g., input validation, authentication, session management) formally documented during the application design phase?
Are commercial off-the-shelf (COTS) applications subjected to vendor security assessments prior to integration?
Are API security baselines (e.g., OWASP API Security Top 10 controls) enforced across all internal and external microservices?
Evidence Artifacts: Security functional requirement sign-offs, vendor application risk assessment forms, API gateway policy logs.
Annex A 8.27 — Secure System Architecture and Engineering Principles
Objective: Establish, document, maintain, and apply principles for engineering information systems across all development phases.
Audit Check Criteria:
Are secure architecture design principles (Defense-in-Depth, Fail-Secure, Zero Trust) documented and implemented across all cloud and on-premise systems?
Are threat modeling exercises (e.g., STRIDE framework) conducted for major system architecture changes?
Are system engineering principles formally reviewed and updated annually to address emerging threat vectors?
Evidence Artifacts: Architecture review board (ARB) approval records, threat modeling documentation, system engineering policy manuals.
Annex A 8.30 — Outsourced Development
Objective: Direct, monitor, and review aspects related to outsourced system development.
Audit Check Criteria:
Are non-disclosure agreements (NDAs) and security SLA clauses embedded in all third-party development contracts?
Is external code subjected to mandatory Static Application Security Testing (SAST) and code reviews prior to production merge?
Are third-party developer access rights audited and immediately revoked upon contract completion?
Evidence Artifacts: Vendor development contracts with security schedules, third-party code SAST scan results, vendor offboarding logs.
Annex A 8.31 — Separation of Development, Test, and Production Environments
Objective: Separate development, testing, and production environments to protect production systems from unauthorized changes or operational instability.
Audit Check Criteria:
Are Development, Test/Staging, and Production environments hosted on logically or physically isolated networks/cloud subscriptions?
Are developers restricted from holding administrative access rights within production environments?
Is data transfer between production and non-production environments strictly controlled, preventing production data copies without sanitization?
Evidence Artifacts: Cloud account/subscription topology diagrams, Production IAM permission listings, environment boundary firewall rules.
Annex A 8.32 — Change Management
Objective: Control changes to information processing facilities and information systems using formal change management procedures.
Audit Check Criteria:
Are all infrastructure and system changes submitted, reviewed, and approved through a formal Change Advisory Board (CAB) or automated CI/CD pipeline gating?
Do change requests include documented rollback plans and risk impact assessments?
Are emergency change procedures defined, requiring post-implementation review within 48 hours of execution?
Evidence Artifacts: CAB meeting minutes, change ticket histories with rollback documentation, emergency change log reviews.
Annex A 8.33 — Test Information
Objective: Select, protect, and control operational testing information.
Audit Check Criteria:
Is real production data strictly prohibited in development and testing environments unless synthetic generation is technically unfeasible?
If production data is authorized for testing, is explicit CISO approval documented, and is data masked or anonymized prior to transfer?
Are test data sets securely deleted immediately upon completion of testing cycles?
Evidence Artifacts: Test data authorization sign-off forms, data masking verification scripts, post-test media sanitization logs.
Annex A 8.34 — Protection of Information Systems During Audit Testing
Objective: Plan and agree upon operational system audit tests involving inspection of operational systems to minimize disruption.
Audit Check Criteria:
Are internal or external audit testing activities (e.g., vulnerability scans, penetration tests) scheduled during maintenance windows to prevent downtime?
Is the scope and technical methodology of audit testing formally approved by system owners prior to execution?
Are audit tools configured to run in read-only mode unless active exploitation testing is explicitly contracted and monitored?
Evidence Artifacts: Rules of Engagement (RoE) audit agreements, maintenance window authorization tickets, audit tool execution logs.
ISO 27001:2022 Technological Controls Audit Mapping Matrix
Step-by-Step ISO 27001 Technical Audit Methodology
Frequently Asked Questions (FAQs)
Q1. How do the 2022 updates to Annex A Domain 8 impact technical audits compared to the 2013 version?
The 2022 standard restructured technical controls into a single dedicated domain (Domain 8: Technological Controls). It introduced critical new controls such as Data Leakage Prevention (A.8.12), Data Masking (A.8.11), Web Filtering (A.8.23), and Configuration Management (A.8.9), requiring auditors to collect deeper technical evidence.
Q2. Can an organization exclude specific technological controls from Annex A Domain 8?
Yes, but only if justified in the formal Statement of Applicability (SoA). For example, if an organization outsources 100% of software development and operates no custom code, controls like A.8.4 (Access to Source Code) can be marked as Not Applicable with documented rationale.
Q3. How frequently must internal technical audits be conducted for ISO 27001?
ISO 27001 requires internal audits at planned intervals (typically at least once per year). However, enterprise best practices recommend continuous technical compliance monitoring across high-risk domains like access management, vulnerability management, and log review.
Q4. What is the difference between an Opportunity for Improvement (OFI) and a Non-Conformity during a technical audit?
A Non-Conformity represents a direct failure to meet an ISO 27001 requirement or internal policy (e.g., MFA not enforced on VPN). An OFI is a recommendation to enhance a control that already meets baseline requirements (e.g., upgrading from SMS-based MFA to FIDO2 hardware keys).
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