CISSP vs Comptia Security Plus

At a glance

Factor	CISSP	CompTIA Security+
Exam fee	$749	$404
Tier	advanced	entry
Provider	ISC2	CompTIA
Questions	100-150 (adaptive)	90
Duration	3 hours	90 minutes
Renewal	Every 3 years	Every 3 years
Holders	Not disclosed	265,992+
DoD 8140 approved	Yes	Yes

What each cert actually signals

CISSP. CISSP is the cybersecurity industry's gold standard for senior practitioners. It tests breadth across eight domains rather than depth in any single one, which makes it a management-track cert rather than a technical-track one. ISC2 requires five years of paid cumulative experience in two or more of the eight domains before you can earn the full CISSP designation; pass the exam without the experience and you become an Associate of ISC2 until you log the time. The exam itself uses computerized adaptive testing, which means the difficulty adjusts to your performance and the length varies from 100 to 150 questions.

CompTIA Security+. Security+ is the cybersecurity industry's most common first certification. It covers the foundational concepts a junior practitioner is expected to have on day one: threats and attacks, cryptography, identity, network security, and governance. I have watched hiring managers use it as a filter rather than a signal, which means candidates without it get screened out even when they have the skills. The exam is vendor-neutral, DoD 8570 approved for IAT Level II roles, and renewed every three years through continuing education. It is the cheapest cybersecurity cert that actually opens doors.

Cost and time investment

CISSP runs $749 for the exam fee alone. Budget another $200-$800 for study materials and practice exams, and 6-16 weeks of prep time depending on your starting point. CompTIA Security+ runs $404 with a similar prep-time range. All-in (fee + materials + opportunity cost of study time at a modest $25/hour), expect $3.2K-$5.5K total for CISSP and $2.9K-$5.2K for CompTIA Security+.

CompTIA Security+ is the lower-risk first purchase when budget is a factor. That said, picking based on price alone is a trap. The right question is which cert the roles you are targeting list on their job postings, which the exam-format and audience sections below help you answer.

Exam format and difficulty

• CISSP: 100-150 (adaptive) questions, 3 hours, passing 700/1000.
• CompTIA Security+: 90 questions, 90 minutes, passing 750/900.

CISSP targets the advanced tier while CompTIA Security+ targets entry. Attempting an advanced-tier cert before the foundations are solid is a common way to burn money and confidence; match the cert to your current experience level.

Domain coverage

CISSP covers: Security and Risk Management; Asset Security; Security Architecture and Engineering; Communication and Network Security; Identity and Access Management; Security Assessment and Testing; Security Operations; Software Development Security.

CompTIA Security+ covers: General Security Concepts; Threats, Vulnerabilities, and Mitigations; Security Architecture; Security Operations; Security Program Management and Oversight.

Career impact

CISSP: CISSP carries one of the largest documented salary premiums in cybersecurity. ISC2 2024 workforce data shows CISSP holders earning $25,000-$45,000 more than non-holders at the same experience level. Architect, CISO, and lead engineer roles in the $140,000-$250,000 range frequently require it as a hard filter.

CompTIA Security+: Security+ holders typically earn 10-15% more than entry-level IT peers without it, per CompTIA 2024 salary data. It is the floor for federal contractor work and opens the $75,000-$95,000 range for SOC Analyst and junior GRC roles.

CISSP shows up most on job postings for: security architect, ciso, security engineer.

CompTIA Security+ shows up most on job postings for: soc analyst, grc analyst, incident responder, security engineer.

Pick this one if

CISSP. Senior security practitioners targeting architect, lead engineer, or CISO tracks. The right cert for professionals with five plus years of experience who want the broadest senior-level recognition.

CompTIA Security+. Career changers breaking into cybersecurity, IT support staff pivoting to security, and veterans using DoD benefits. The right first cert when you want the broadest employer recognition at the lowest cost.

Verdict

For most candidates, the answer is not "which one is better" but "which one does the job posting demand." Pull 5-10 postings for the role you want, tally which cert appears most often, and pick that one first. If both appear roughly equally, pick the lower-cost one and treat the other as a follow-up in year 2-3.

Run both numbers through the Certification ROI Calculator to see the expected payback under your specific salary and cost assumptions. Or take the Career DNA assessment (2 min, free) to get a cert path tailored to your profile.