ISO 27400 Lead Manager study materials
ISO 27400 Lead Manager study resources

ISO 27400 Lead Manager study plan

ISO 27400 Lead Manager · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

Fundamental concepts and principles of IoT security

  • Define IoT ecosystem components, device classes, and reference architectures (edge, gateway, cloud) from ISO/IEC 27400 and related standards.

  • Explain the core security properties (confidentiality, integrity, availability, privacy) as applied to constrained devices and long-lived deployments.

  • Identify the principal threat agents, attack surfaces, and lifecycle stages (concept, design, development, operation, decommissioning) that shape IoT risk.

  • Map at least five real-world IoT incident patterns (e.g., botnets, default credentials, insecure update channels) to the concepts in Domain 1.

Your checkpoint

A one-page concept map linking IoT components, lifecycle stages, security properties, and threat categories, with a short rationale for each link.

Week 2

Fundamental concepts and principles of IoT security & ISO/IEC 27400 IoT security controls and risk management

  • Describe the structure and intent of ISO/IEC 27400 and how it relates to ISO/IEC 27001 and other IoT guidance.

  • Classify the ISO/IEC 27400 control areas (e.g., governance, asset management, access control, cryptography, update management) and explain the purpose of each.

  • Relate each control area to the corresponding risk treatment options (avoid, mitigate, transfer, accept) in an IoT context.

  • Draft risk scenarios for a representative IoT deployment (smart building or industrial sensor network) and match them to specific ISO/IEC 27400 controls.

Your checkpoint

A control-to-risk matrix with at least 10 IoT risk scenarios mapped to ISO/IEC 27400 control areas and proposed treatment options.

Week 3

ISO/IEC 27400 IoT security controls and risk management

  • Apply a structured IoT risk assessment process (asset identification, threat modeling, vulnerability analysis, likelihood and impact estimation) to a chosen scenario.

  • Evaluate the suitability of ISO/IEC 27400 controls against identified risks, including dependencies and residual risk.

  • Document risk treatment decisions with justification and assign ownership for each control.

  • Identify constraints specific to IoT (constrained devices, physical exposure, long support life) that affect control selection.

Your checkpoint

A risk assessment report for a fictional IoT deployment including asset inventory, threat model, risk register with at least 12 entries, and treatment plan referencing ISO/IEC 27400 controls.

Week 4

Planning an IoT security program based on ISO/IEC 27400

  • Define scope, objectives, and success criteria for an IoT security program aligned with organizational strategy and ISO/IEC 27400.

  • Develop a governance structure specifying roles, responsibilities, and decision rights for IoT security across IT, OT, and product teams.

  • Create a high-level implementation roadmap that sequences controls by risk priority, feasibility, and lifecycle stage.

  • Establish a policy framework (acceptable use, secure development, third-party management, incident response) that anchors the program.

Your checkpoint

An IoT security program charter and 12-month roadmap covering scope, governance roles, prioritized control implementation phases, and policy list.

Week 5

Planning an IoT security program based on ISO/IEC 27400 & Implementing and operating IoT security controls

  • Translate the program roadmap into detailed implementation plans for at least three control areas (e.g., identity and access management, secure configuration, update management).

  • Specify technical and procedural requirements for device onboarding, credential management, and secure decommissioning.

  • Design monitoring and logging requirements for IoT environments, including what to collect, where to store it, and retention periods.

  • Identify required resources, skills, and third-party dependencies for the implementation plan.

Your checkpoint

Three detailed implementation plans (one per control area) with tasks, owners, timelines, resource estimates, and acceptance criteria.

Week 6

Implementing and operating IoT security controls

  • Implement a secure configuration baseline for a representative IoT device class and document verification steps.

  • Establish an access control model (roles, least privilege, segregation of duties) for IoT management interfaces and back-end services.

  • Define and test an update and patch management process, including rollback and integrity verification.

  • Operate an incident response exercise for an IoT-specific scenario (e.g., compromised sensor, credential leak) and capture lessons learned.

Your checkpoint

A configuration baseline document, access control matrix, update process flowchart, and incident response exercise report with findings.

Week 7

Implementing and operating IoT security controls & Monitoring, reviewing, and continually improving IoT security

  • Define key performance indicators (KPIs) and key risk indicators (KRIs) to measure IoT security control effectiveness.

  • Design a monitoring and review cycle (dashboards, log reviews, vulnerability scans, compliance checks) with clear frequencies and owners.

  • Plan an internal audit or assessment of the IoT security program against ISO/IEC 27400 controls.

  • Identify improvement mechanisms (corrective actions, management review, lessons learned) and integrate them into the program.

Your checkpoint

A monitoring and review plan including KPI/KRI definitions, review schedules, audit checklist, and a corrective action log template.

Week 8

Monitoring, reviewing, and continually improving IoT security

  • Conduct a simulated management review using the monitoring data and audit findings from Week 7.

  • Produce a continual improvement plan with prioritized actions, owners, and target dates.

  • Consolidate all deliverables into a coherent program summary aligned to ISO/IEC 27400 domains.

  • Complete a timed practice assessment covering all five domains and analyze gaps for final review.

Your checkpoint

A management review report and continual improvement plan, plus a personal gap analysis from the practice assessment with a final revision checklist.

Milestones

Week 2: Can explain the purpose and structure of ISO/IEC 27400 and map at least 10 IoT risks to its control areas without notes.

Week 4: Has produced a complete risk assessment and a program charter with roadmap that a peer can follow to begin implementation.

Week 6: Has demonstrated implementation of at least three control areas through documented baselines, procedures, and an incident response exercise.

Week 8: Has a management review report, continual improvement plan, and practice assessment score of at least 75% with a targeted revision list.