How current is the CSSLP cheat sheet?

It's built from the current ISC2 CSSLP exam outline (effective September 15, 2023) and its eight-domain weighting, and we review it against ISC2's published outline regularly.

Can I pass the CSSLP with the cheat sheet alone?

No — the cheat sheet is a fast review and final-week cram aid, not a substitute for studying all eight domains. You need a scaled score of 700 out of 1000 to pass, so use the sheet to lock in high-yield facts and the practice test to build your readiness across the full lifecycle.

How do I get the CSSLP cheat sheet?

Click the download button (or the preview card) at the top of this page to open the PDF instantly. Bookmark this page so you can find it again in the final week before your ISC2 exam.

Free CSSLP Cheat Sheet 2026 — Downloadable PDF

Q: What's on the CSSLP cheat sheet?

The cheat sheet condenses the highest-yield secure software lifecycle facts into a quick reference: the CIA triad and secure design principles, STRIDE threat modeling, the crypto sign-vs-encrypt rule, secure coding fixes for the OWASP Top 10, and testing types — organized by the eight domains ISC2 weights the exam around.

This CSSLP cheat sheet distills all eight ISC2 secure software lifecycle domains into a printable rundown of the facts examiners test most. It's a premium cheat sheet built by Capital Prep — the one premium prep we trust — and it's yours free. Reinforce it with the rest of your free CSSLP toolkit: the practice test, study guide, and flashcards.

CSSLP exam at a glance

Questions: 125 multiple-choice
Time: 3 hours
Passing score: 700 out of 1000 (scaled score)
Cost: About $599 USD; recertify every 3 years with 90 CPE credits plus a $135 annual maintenance fee

What’s on the CSSLP cheat sheet

Secure Software Architecture & Design (15%) — threat modeling with STRIDE and PASTA, secure design patterns, and cryptography — the largest domain.
Secure Software Implementation (14%) — input validation, output encoding, and the OWASP Top 10 fixes for injection, XSS, and buffer overflows.
Secure Software Testing (14%) — SAST, DAST, IAST, fuzzing, and penetration testing — and which bug each one catches.
Secure Software Requirements (13%) — functional vs. non-functional requirements, misuse/abuse cases, the RTM, and data classification.
Secure Software Concepts (12%) — the CIA triad and the most-tested secure design principles — least privilege, defense in depth, fail-secure.
Secure Software Lifecycle Management (11%) — the secure SDLC, shift-left, DevSecOps, and maturity models (BSIMM, OWASP SAMM, NIST SSDF).
Deployment, Operations & Maintenance (11%) — hardening, secure baselines, continuous monitoring, and patch and vulnerability management.
Secure Software Supply Chain (10%) — SBOMs, software composition analysis, code signing, and pedigree and provenance.

Highest-yield facts on the sheet

CIA triad = Confidentiality, Integrity, Availability — plus authentication, authorization, and non-repudiation; least privilege and defense in depth are the two most-tested principles.
STRIDE = Spoofing, Tampering, Repudiation, Information disclosure, Denial of service, Elevation of privilege — each maps to one security goal and one class of control.
Crypto rule: SIGN with your own private key, ENCRYPT with the recipient's public key; hashing gives integrity, a digital signature adds authenticity and non-repudiation, and PKI manages trust.
For any injection attack the best answer is input validation plus parameterized queries; output encoding and a Content Security Policy stop XSS.
Threat modeling happens in design (not testing); shift left because a flaw found in design costs far less than one found in production.

How to use it in your final week

Memorize STRIDE cold and map each letter to its goal — Spoofing to authentication, Tampering to integrity, Repudiation to non-repudiation, Information disclosure to confidentiality, Denial of service to availability, Elevation of privilege to authorization.
Front-load the heaviest cluster: Architecture & Design (15%), plus Implementation and Testing (14% each) make up 43% of the exam. If you master anything from the sheet, make it these three.
Drill the one crypto rule people miss the morning of the test: you SIGN with your own private key and ENCRYPT with the recipient's public key.
Pair each review pass with a short timed practice set (125 questions in 3 hours is about 86 seconds each) so scenario pacing feels routine on exam day.

The cheat sheet is your review layer — your CSSLP practice test drives the exam-readiness ring at the top of this page. Download it, review, then take a full practice exam (or drill with the study guide and flashcards) to see where you stand.

CSSLP cheat sheet FAQ

Yes — the CSSLP cheat sheet is 100% free to download as a PDF, with no sign-up required. It's part of Career Employer's free CSSLP toolkit alongside the practice test, study guide, and flashcards.

References

1.ISC2. “CSSLP — Certified Secure Software Lifecycle Professional.” isc2.org, 2026. ↑
2.ISC2. “CSSLP Certification Exam Outline (effective September 15, 2023).” isc2.org. ↑
3.ISC2. “CSSLP Experience Requirements.” isc2.org. ↑
4.National Institute of Standards and Technology. “SP 800-218: Secure Software Development Framework (SSDF).” csrc.nist.gov. ↑

Career Employer

Career Employer is the ultimate resource to help you get started working the job of your dreams. We cover topics from general career information, career searching, exam preparation with free study materials, career interviewing, and becoming successful in your career of choice.

All Posts

Career Employer’s Editorial Process

Here at Career Employer, we focus a lot on providing factually accurate information that is always up to date. We strive to provide correct information using strict editorial processes, article editing, and fact-checking for all of the information found on our website. We only utilize trustworthy and relevant resources. To find out more, make sure to read our full editorial process page here.

Your Free CSSLP Cheat Sheet 2026 — Downloadable PDF