Information Systems Security Engineering Professional (ISSEP) Practice Test

The ISSEP is designed for senior security professionals who specialize in the intersection of systems engineering and information security. Relevant roles include Senior Systems Engineer, Information Assurance Systems Engineer, Information Assurance Officer, Information Assurance Analyst, and Senior Security Analyst. It is particularly well-suited for professionals working on large-scale government, defense, or critical infrastructure programs where formal engineering processes and authorization frameworks (such as the NIST Risk Management Framework) are mandatory.

Candidates typically come from backgrounds in systems engineering, enterprise security architecture, or defense contracting, and are seeking to formally validate their expertise in engineering secure systems from requirements through decommissioning. Given its NSA origins and DoD 8140 recognition, the ISSEP is especially valued by professionals pursuing or holding roles requiring formal security engineering credentials within federal agencies and defense contractors.

The primary prerequisite path requires candidates to hold an active CISSP credential in good standing, plus two years of cumulative, full-time professional work experience in one or more of the five ISSEP exam domains. This makes the ISSEP a post-CISSP concentration rather than a standalone entry-level certification.

For candidates without the CISSP, a minimum of seven years of cumulative, full-time experience in two or more of the ISSEP domains is required. A post-secondary degree in computer science, information technology, or a related field—or an additional ISC2-approved credential—may satisfy one year of the experience requirement, though no more than one year may be waived. Part-time work and qualifying internships may count toward the experience total. Recommended knowledge includes familiarity with NIST SP 800-160 (Systems Security Engineering), NIST SP 800-37 (Risk Management Framework), ISO/IEC 27001, INCOSE Systems Engineering Handbook, and PMBOK project management concepts.

The ISSEP exam consists of 125 scored items and must be completed within 3 hours (180 minutes). Questions include multiple-choice and advanced item types (such as drag-and-drop or hotspot items). The exam is delivered in English only and is administered exclusively through Pearson VUE testing centers; it is not available as an online proctored exam. There are no unscored/survey questions disclosed by ISC2 for this exam format.

ISC2 uses a scaled scoring system across all its certification exams. All raw scores are converted to a scale of 0–1,000, and the passing score is 700. This scaled score remains constant regardless of which exam form is administered. Candidates who do not pass will receive a score between 0 and 699 along with diagnostic feedback by domain.

• 1.Domain 1: Systems Security Engineering Foundations (24%) — Covers engineering fundamentals and trust concepts, relationships between systems and security engineering processes, structural design principles (NIST framework, ISO 27001, ISO/IEC 24641:2023), security governance and compliance, integration with SDLC methodologies, technical management including configuration and quality assurance, technology procurement, and supply chain risk management (SCRM).
• 2.Domain 2: Risk Management (20%) — Covers alignment with enterprise risk management principles, establishing risk context, risk identification and inherent risk analysis, evaluation and treatment of risks, monitoring changes to risk posture, and documentation of risk findings and authorization decisions.
• 3.Domain 3: Security Planning and Engineering (22%) — Covers analysis of organizational environment and stakeholder requirements, application of security principles such as defense-in-depth, Zero Trust, resiliency, and least privilege, development and documentation of system security requirements, functional analysis, system design creation, design validation, and engineering trade-off studies.
• 4.Domain 4: Systems Security Implementation, Verification and Validation (20%) — Covers security solution implementation and integration into target systems, support for DevSecOps and CI/CD pipeline security, development of security test plans, security verification and validation activities, risk analysis updates post-implementation, and stakeholder acceptance documentation.
• 5.Domain 5: Secure Operations, Change Management and Disposal (14%) — Covers secure operations planning and personnel security requirements, design of continuous monitoring strategies, incident response support, change impact assessment and verification, secure disposal requirements, and decommissioning procedures for systems and data.

• Download and study the official ISC2 ISSEP Exam Outline (effective August 1, 2025) from isc2.org/certifications/issep/issep-certification-exam-outline — use the domain percentage weights to allocate your study time proportionally, spending the most time on Domain 1 (24%) and Domain 3 (22%).
• Read NIST SP 800-160 Volume 1 Rev 1 (Systems Security Engineering) and Volume 2 Rev 1 (Cyber Resiliency Engineering) cover-to-cover, as these are the foundational references for the ISSE process and appear heavily throughout the exam.
• Study the full NIST Risk Management Framework (SP 800-37 Rev 2) and related publications including SP 800-53, SP 800-161 (SCRM), SP 800-171, and SP 800-115 (security testing) to cover Domains 2 and 4 in depth.
• Review the INCOSE Systems Engineering Handbook alongside ISO/IEC/IEEE 42010 (architecture description) and ISO/IEC 42020 (architecture processes) to understand the formal systems engineering context within which security engineering operates.
• Use the official ISC2 ISSEP Online Self-Paced Training, which uses AI-driven personalization to target your weak areas — it also includes an Education Guarantee allowing free re-access if you do not pass on your first attempt.
• Practice applying trade-off analysis and engineering design decisions in security contexts, since the ISSEP tests applied judgment across the full system lifecycle, not just memorization of standards — focus on scenario-based questions that require integrating multiple domains.
• Leverage the ISC2 ISSEP Study Group in the ISC2 Community forum (community.isc2.org) for peer discussion of exam changes, domain-specific study references, and shared experience from recent test-takers, especially regarding the August 2025 outline updates.

The ISSEP is one of three advanced concentration certifications that build on the CISSP (alongside ISSAP and ISSMP), positioning holders at the senior technical specialist level in the security engineering discipline. It is directly recognized under U.S. DoD Directive 8140, making it a qualifying credential for roles within the Department of Defense, federal agencies, and defense contractors—where formal credential requirements for security engineering positions are mandated. Professionals holding the ISSEP are typically employed as senior systems engineers, information assurance officers, or lead security architects on complex government and critical infrastructure programs.

According to industry salary surveys, CISSP concentration holders, including ISSEP, consistently command salaries above the standard CISSP baseline, with senior security engineers in government contracting and defense sectors earning between $130,000 and $180,000 annually depending on clearance level and location. Both ZDNet and Network World have recognized the ISSEP as one of the most valuable technology certifications. With fewer than 1,500 ISSEP holders worldwide as of recent counts, the credential remains rare and highly differentiated, offering a strong competitive advantage in the federal and defense cybersecurity market.