The CompTIA Security+ exam carries the highest passing score among core CompTIA certifications: 750 out of 900, approximately 83% correct. This elevated threshold reflects the critical importance of cybersecurity competency and Security+'s role in DoD 8570/8140 compliance. Understanding how the scoring system works, which domains carry the most weight, and what practice test scores predict real-exam success is essential for efficient preparation and first-attempt passing.
Score range: 100-900 | Up to 90 questions | 90 minutes
Passing: 750 (~83%)Security+ requires a 750/900 passing score—75 points higher than Network+ (720) and 75 points higher than A+ Core 1 (675). This isn't arbitrary. CompTIA sets passing thresholds through rigorous psychometric analysis involving subject matter experts who determine the minimum competency level for each certification. For Security+, the higher bar reflects several factors:
High-stakes domain. Security professionals protect organizations from threats that can cause millions in damages. A marginally competent security professional is a liability, not an asset. The 750 threshold ensures that certified professionals have comprehensive knowledge across all security domains, not just surface-level familiarity.
DoD 8570/8140 compliance. Security+ satisfies IAT Level II requirements for Department of Defense positions. This mandatory compliance status means thousands of government and contractor jobs require Security+. The higher passing score ensures that DoD-compliant certified professionals meet the rigorous security standards expected in defense environments.
Industry trust. Employers trust Security+ because the high passing threshold filters out underprepared candidates. This trust directly translates to career value—Security+ holders command $15,000-$30,000 higher starting salaries than non-certified peers with similar experience levels.
| Domain | Weight | ~Questions | Key Topics |
|---|---|---|---|
| 1. General Security Concepts | 12% | ~11 | Security controls, CIA triad, zero trust |
| 2. Threats, Vulnerabilities, Mitigations | 22% | ~20 | Attack types, social engineering, indicators |
| 3. Security Architecture | 18% | ~16 | Network security, cloud, cryptography |
| 4. Security Operations | 28% | ~25 | Monitoring, IR, IAM, automation |
| 5. Security Program Mgmt | 20% | ~18 | Governance, risk, compliance, awareness |
Critical insight: Security Operations (28%) is by far the heaviest domain. This domain focuses on day-to-day security tasks—monitoring, incident response, identity management, and vulnerability management. Mastering this domain alone covers over a quarter of the exam. Threats/Vulnerabilities (22%) and Security Program Management (20%) round out the top three, together accounting for 70% of the total exam.
Because Security+ has the highest CompTIA passing threshold, you need higher practice test scores to feel confident. The margin for error is slimmer—a 5-10% exam-day performance drop from 85% practice scores puts you right at the 750 boundary. Here's what experienced Security+ study coaches recommend:
Very thin margin. Continue studying, especially PBQ-heavy domains.
Strong readiness. Schedule within 1-2 weeks.
Schedule immediately. Don't over-study.
Cryptography weakness. Many candidates underestimate cryptography questions. Know symmetric vs asymmetric encryption, hashing algorithms, digital signatures, PKI, and certificate management. These concepts appear across multiple domains, not just Security Architecture.
PBQ underpreparation. Security+ PBQs may involve configuring firewall rules, analyzing log files, setting up access controls, or identifying attack patterns in network captures. Unlike multiple-choice questions where you can guess, PBQs require demonstrable practical knowledge. Practice with hands-on labs using tools like TryHackMe, HackTheBox, or CompTIA's CertMaster Labs.
Scenario-based thinking. The current Security+ exam emphasizes scenario-based questions more than previous versions. You'll encounter multi-paragraph scenarios describing a security incident or organizational situation, then choose the best response. Practice reading scenarios carefully and identifying what's actually being asked before reviewing answer choices.
See where you stand with practice tests matching the Security+ exam format.
Start Free Security+ Practice Test →The Security+ exam requires 750 out of 900 (~83%). This is the highest passing threshold among core CompTIA certifications, reflecting the critical nature of cybersecurity competency and DoD compliance standards.
Security professionals protect organizational assets and data. The 750 threshold ensures certified professionals have comprehensive security knowledge. It also maintains the credibility required for DoD 8570/8140 IAT Level II compliance.
Aim for 88-90%+ consistently. With a ~83% passing requirement, you need a larger buffer than other CompTIA exams. Most successful candidates report practice test averages of 87-92% before scheduling.
Security+ has an estimated 70-75% first-attempt pass rate. Common failure points include weak PBQ performance, insufficient cryptography knowledge, and underestimating scenario-based questions. 4-8 weeks of dedicated study is recommended.
Security Operations (28%) is the heaviest and most scenario-driven domain. Security Architecture (18%) challenges candidates with cryptography and cloud security concepts. Focus proportionally on these domains during study.
Possible but significantly harder. Plan for 8-12 weeks of intensive study, extensive hands-on lab practice with tools like TryHackMe, and completing at least 1,000 practice questions from multiple sources.