Pass the CISSP by training judgment, not memorizing trivia.
Cipher8 turns 8 ISC2 domains into a decision-reps factory: adaptive practice, FSRS spaced repetition, confidence calibration and a personal mistake journal — every minute engineered to make you pick the BEST answer under pressure.
No credit card to start. Cancel Pro anytime.
Knowing the topic isn't the same as picking the BEST answer.
The CISSP exam rewards risk-based judgment in scenarios where every option looks plausible. Cipher8 is built for that specific skill — not for cramming definitions.
Every session is questions, not lectures. Reps build retrieval strength, the only thing the exam tests.
Modern memory scheduling resurfaces concepts the moment you'd forget them — no Anki tuning.
Track confident-wrong answers (the quadrant that fails the exam) and fix the over-confidence pattern.
Every miss flows into a personal review queue, weighted by domain importance.
A 60–90 minute assessment seeds a study plan against the official ISC2 blueprint weights.
Weighted accuracy across domains gives you a calibrated read on exam readiness.
Trained against the ISC2 blueprint weights.
Domain 1 free forever.
All 8 domains for $10 a month.
No annual lock-in. No tiered upsells. One plan, cancel anytime. Billing handled by Paddle as our Merchant of Record, with tax included where required.
- All 8 CISSP domains
- Full adaptive diagnostic
- Interleaved practice across domains
- Weighted pass-probability estimate
- Cancel anytime
CISSP prep questions
Is Cipher8 affiliated with ISC2?
No. Cipher8 is independent study software. CISSP® is a registered mark of ISC2; we are not endorsed by or affiliated with them.
How is this different from a question bank?
Question banks measure what you already know. Cipher8 actively builds judgment via spaced repetition (FSRS), confidence calibration and a mistake-journal loop tuned for the 'BEST answer' style of the CISSP exam.
What's free vs. Pro?
Domain 1 — Security & Risk Management — is free forever, including FSRS scheduling and the mistake journal. Pro ($10 USD per month) unlocks Domains 2–8, the full adaptive diagnostic and weighted pass-probability estimates.
Can I cancel anytime?
Yes. Cipher8 Pro is a no-commitment monthly subscription. Cancel and you keep access until the end of the billing period.
How does billing work?
Payments are processed by Paddle, our Merchant of Record. They handle taxes, invoicing and refunds globally.
Ready to think like a CISSP?
Start with Domain 1 free. Upgrade when you're ready to train the other seven.