ICS/SCADA Cybersecurity Practice Test

This certification is designed for IT and OT professionals who administer, patch, or secure ICS and SCADA systems, including System Administrators and System Engineers working in industrial environments such as oil and gas, energy, utilities, and manufacturing. Security Consultants who conduct security assessments of ICS/SCADA installations are also a primary audience, as are Business Systems Analysts who support interfaces between corporate business systems and SCADA networks.

The credential is appropriate for mid-career professionals with a networking and security background who are transitioning into or expanding responsibilities within operational technology environments. It suits those who need a foundational-to-intermediate understanding of ICS/SCADA-specific threats, standards, and defensive strategies, and who are responsible for establishing or maintaining information security policies for critical infrastructure.

There are no mandatory formal prerequisites published by EC-Council for this exam, but candidates are strongly recommended to have Linux operating system fundamentals including basic command-line usage before attempting the course or exam. A solid grasp of essential networking concepts is expected—specifically the OSI model, TCP/IP protocol architecture, networking devices, and transmission media. Familiarity with network traffic inspection tools such as Wireshark, TShark, or TCPdump is also recommended, as is conceptual knowledge of programming or scripting.

Candidates should additionally possess a working understanding of basic cybersecurity concepts including malware categories, intrusion detection systems, firewalls, and common vulnerabilities. Prior exposure to IT security operations or a general security certification (such as CompTIA Security+) would be beneficial, though not required. Minors seeking to sit the exam must provide written parental consent along with institutional documentation per EC-Council policy.

The ICS-SCADA exam consists of 75 multiple-choice questions and must be completed within a 2-hour (120-minute) time limit. The passing score is 70%. The exam is delivered through EC-Council's ECC Exam Center, which provides proctored testing in a controlled environment. Question types are multiple-choice with a single correct answer, testing both conceptual knowledge and applied understanding of ICS/SCADA security principles.

EC-Council publishes an official Exam Blueprint document (available at cert.eccouncil.org) that outlines the topic domains and their respective weightings, which candidates are advised to use as a primary study guide. There are no publicly disclosed unscored or beta questions built into the exam format at this time.

• 1.Domain 1 – Introduction to ICS/SCADA Network Defense: Covers the IT versus ICS/SCADA security model, security posture assessment, risk management frameworks, risk assessment methodologies, and the development and enforcement of security policies specific to industrial environments.
• 2.Domain 2 – TCP/IP and ICS/SCADA Networking: Covers TCP/IP protocol architecture and layering, ICS/SCADA-specific communication protocols (such as Modbus, DNP3, and OPC), RFCs and standards relevant to industrial networking, and network segmentation strategies for OT environments.
• 3.Domain 3 – Introduction to Hacking and Attack Methodologies: Covers attacker-perspective techniques including footprinting, intelligence gathering, scanning, enumeration, exploitation, and covering tracks, with emphasis on how these techniques apply to ICS/SCADA targets.
• 4.Domain 4 – Vulnerability Management: Covers identification of system and desktop vulnerabilities, use of CVE databases and ICS/SCADA-specific vulnerability repositories (such as ICS-CERT advisories), and the unique challenges of patch and vulnerability management in operational technology environments where uptime and safety constraints limit remediation options.
• 5.Domain 5 – ICS/SCADA Defense, Intrusion Detection, and Incident Response: Covers defense-in-depth strategies for industrial networks, intrusion detection and monitoring techniques tailored to OT traffic, malware analysis relevant to ICS threats (e.g., Stuxnet, Triton/TRISIS), digital forensics in ICS environments, and structured incident response procedures for critical infrastructure breaches.
• 6.Domain 6 – Standards and Regulations: Covers key ICS/SCADA security standards and regulatory frameworks including IEC 62443, NIST SP 800-82 (Guide to ICS Security), ISO/IEC 27001 applied to industrial environments, NERC CIP for energy sector compliance, and other sector-specific regulatory requirements.

• Download and study the official EC-Council ICS-SCADA Exam Blueprint from cert.eccouncil.org before doing anything else—it defines the exact domains and relative weights that the 75-question exam covers, allowing you to allocate study time proportionally.
• Use NIST SP 800-82 (Guide to Industrial Control Systems Security) as a free, authoritative reference for understanding ICS/SCADA architecture, threat landscape, and recommended countermeasures—much of the exam content aligns closely with this publication.
• Practice with Wireshark or TShark to capture and analyze ICS protocol traffic (Modbus, DNP3). Hands-on familiarity with how these protocols appear on the wire helps answer applied questions about anomaly detection and intrusion analysis.
• Study ICS-CERT advisories and the CVE database specifically filtered for ICS/SCADA products to build familiarity with real-world vulnerability examples, vendor-specific weaknesses, and the patch management challenges unique to OT systems.
• Review the IEC 62443 series and NERC CIP standards at a conceptual level—understand their purpose, scope, and key requirements. The exam tests knowledge of which standards apply to which industry sectors and how they differ from general IT security frameworks like ISO 27001.
• Work through EC-Council's official iClass course materials or the ICS/SCADA video course available at iclass.eccouncil.org, as EC-Council exams are closely aligned with their own courseware modules and terminology.
• Build a lab using free tools such as OpenPLC, ScadaBR, or a GNS3 network simulation to practice scanning and enumeration techniques against ICS-like environments—this reinforces the attack-methodology domains and helps distinguish OT network behavior from standard IT traffic.

Professionals holding the EC-Council ICS/SCADA Cybersecurity certification are positioned for roles such as ICS/SCADA Security Analyst, OT Security Engineer, Critical Infrastructure Security Consultant, and Industrial Cybersecurity Specialist. These roles exist across high-demand sectors including energy and utilities, oil and gas, water and wastewater, manufacturing, and transportation—all of which face increasing regulatory pressure and threat actor attention. The ICS/SCADA security skills market remains undersupplied relative to demand, with practitioners who can bridge IT and OT security commanding premium compensation, typically in the range of $90,000–$140,000+ USD annually depending on sector and geography.

The EC-Council ICS-SCADA credential serves as a solid entry point into OT cybersecurity and complements other certifications such as GICSP (Global Industrial Cyber Security Professional by GIAC) or ISA/IEC 62443 Cybersecurity certificates. While GICSP is more widely recognized at the senior level, the EC-Council certification offers a more accessible path for professionals transitioning from general IT security into the industrial domain, and is particularly useful for those already embedded in EC-Council's certification ecosystem (CEH, CPENT, CHFI).