Industrial Cybersecurity Essentials

Distinguish IT and OT security priorities by evaluating the safety, availability, integrity, reliability, latency, and confidentiality needs of a representative process.

Trace a closed control loop from process variable and sensor through controller logic to actuator and physical outcome.

Identify the roles and dependencies of PLCs, RTUs, HMIs, SCADA, DCS, historians, engineering workstations, alarms, interlocks, and safety systems in an architecture diagram.

Map a representative industrial architecture to Purdue levels 0–5 and explain where the model oversimplifies modern OT environments.

Predict how changes to setpoints, controller logic, alarms, and interlocks could affect process safety and availability.

Implement and document a basic PLC-to-HMI control scenario in the authorised lab environment.

Create an OT asset inventory that records function, owner, location, dependencies, criticality, and evidence confidence.

Explain a PLC engineering workflow and identify security risks in project transfer, controller modes, credentials, and configuration management.

Identify zones, conduits, trust boundaries, critical assets, and single points of failure in a supplied industrial network diagram.

Select passive-first discovery methods and justify when active enumeration would or would not be safe for a given OT scenario.

Assess the exposure created by vendor access, remote administration, transient assets, insecure services, and enterprise-to-OT pathways.

Design a segmented OT architecture with an industrial DMZ, controlled remote access, management paths, and safety-system independence.

Examine a synthetic controller memory or configuration artefact for exposed credentials and document the limits of the evidence.

Produce a threat model and prioritised defensive improvement plan for a fictional industrial site.

Capture or import industrial traffic, establish a normal-communications baseline, and preserve reproducible packet-analysis evidence.

Decode Modbus TCP requests, responses, function codes, coils, and registers and infer their potential process effects.

Interpret DNP3 operations and communication roles in a supplied traffic capture.

Evaluate an OPC UA communication flow for its security mode, authentication, integrity, and encryption properties.

Identify EtherNet/IP and CIP communication roles and operations in a supplied traffic capture.

Identify Siemens S7 communication phases and suspicious engineering operations in a supplied traffic capture.

Derive and validate least-privilege firewall allowlist rules from documented industrial communication requirements.

Investigate anomalous industrial traffic using packet, flow, and IDS evidence and write a defensible incident finding.

Classify the functions, dependencies, and credible attack surfaces of HMIs, historians, engineering workstations, databases, and industrial web services.

Investigate a simulated HMI web compromise and separate verified evidence from hypotheses.

Demonstrate an authentication or input-validation weakness against an isolated test application and recommend proportionate mitigations.

Collect a Windows host baseline with beginner-level PowerShell and document services, accounts, network listeners, firewall state, and persistence-relevant artefacts.

Build a concise attack timeline from Windows event logs and state the confidence and limitations of each conclusion.

Assess Linux services, permissions, authentication logs, and audit settings against an OT-focused hardening checklist.

Apply and validate a host firewall policy without blocking documented operational communications.

Produce a risk-based patch or compensating-control recommendation for an industrial workstation with production constraints.

Perform a public-information-based ISA/IEC 62443 zone-and-conduit risk assessment without relying on restricted standards text.

Build a current-state and target-state NIST CSF 2.0 profile for a fictional OT environment using NIST SP 800-82 Rev. 3 guidance.

Review an ICS security policy for gaps in ownership, vendor access, change control, vulnerability management, and lifecycle responsibilities.

Prioritise OT risks using asset criticality, credible threat, exposure, process consequence, safety impact, and compensating controls.

Configure centralised collection of authorised lab telemetry and validate a detection alert against known test activity.

Define and test backup, restoration, and operational validation criteria for a representative OT component.

Write a safety-aware incident-response playbook for suspected unauthorised PLC or engineering-workstation activity.

Map evidence-supported adversary behaviours to the current MITRE ATT&CK for ICS knowledge base while avoiding unsupported attribution.

Scope a staged OT incident and identify critical assets, operational dependencies, evidence sources, and immediate information gaps.

Preserve supplied evidence, normalise timestamps, maintain investigation notes, and state testable incident hypotheses.

Identify indicators and suspicious industrial operations by correlating PCAPs, endpoint logs, IDS alerts, and simulated process telemetry.

Construct a defensible incident timeline that distinguishes observed facts, derived conclusions, and unresolved assumptions.

Infer the likely attack path and affected assets, then map only evidence-supported behaviours to MITRE ATT&CK for ICS.

Assess potential cyber-physical and safety consequences and compare branching containment options by risk to safety, availability, evidence, and attacker access.

Define recovery, controller-logic validation, credential remediation, monitoring, and return-to-service checks for the affected environment.

Produce a concise technical incident report, executive briefing, remediation roadmap, and final self-assessment supported by cited evidence.