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CISSP (Certified Information Systems Security Professional) Study Guide (2026)

This is the free study guide for the CISSP (Certified Information Systems Security Professional) exam — the same content areas the exam tests, written to the official outline. Read any chapter online free below, then drill the material with 122+ free practice questions and a full timed mock exam.

Last updated: August 2026.

Open the full study guideEvery chapter, in one place — free to read online.

The 8 chapters

  1. 1Security and Risk Management16% of the exam
  2. 2Asset Security10% of the exam
  3. 3Security Architecture and Engineering13% of the exam
  4. 4Communication and Network Security13% of the exam
  5. 5Identity and Access Management (IAM)13% of the exam
  6. 6Security Assessment and Testing12% of the exam
  7. 7Security Operations13% of the exam
  8. 8Software Development Security10% of the exam

Practice what you read

Reading is step one; recalling it under exam pressure is what passes. Drill free CISSP (Certified Information Systems Security Professional) practice questions, then sit a full timed mock exam.

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Educational summary, not a substitute for the official material — always confirm current details with ISC2. Last updated: August 2026.

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