Validates knowledge of security operations, including alert and log analysis, vulnerability prioritization, incident handling and reporting.
CySA+ tests whether you can detect, analyze and respond to threats as a security analyst. Expect logs, alerts, scan output and incident scenarios rather than definitions. Learn the objectives with one course, practise reading real tool output, then use timed tests to find gaps.
Example scenario: An EDR alert shows an Office document starting an encoded PowerShell command on a finance laptop. Which data would you collect before deciding whether to isolate it?
Example scenario: Two critical findings arrive on the same day. One is on an internal test server; the other is on an internet-facing web server with a public exploit. How would you order the remediation work?
Example scenario: A ransom note appears on a file server at 2 a.m. What would you do first, and which systems would you check for the same activity?
Example scenario: Executives want a one-page summary of this month's vulnerability work while engineers need the full list. What would each report include?
Official CS0-004 exam objectives · CS0-004 (V4)
Choose the best answer from the options, or the stated number of answers when a question asks for more than one.
Several failed logins hit one account within a minute. Which log field best shows whether they came from a single source or many?
A. Grouping the failures by source IP address shows one attacker or a spread across many addresses, which separates brute force from password spraying.
Analyze logs, scan results or tool output in a simulated environment and complete an analyst task, such as identifying an attack or choosing a response.
A web server log shows this request returning many records: GET /items?id=5' OR '1'='1. Choose the attack and the best fix.
SQL injection, fixed with parameterized queries. The quote and OR '1'='1' change the database query, and parameterized queries stop input from being treated as code.
Read the objectives and test yourself on a short set of questions. Choose one main course, then spend the rest of the time on tool output, scenarios and review.
Most candidates spend 50–100 hours. Plan for the low end if you already work in a SOC; plan for the high end if logs and scanning are new to you.
Use one complete CS0-004 course as your main resource and the objectives as your checklist. Add the Sybex guide if you prefer reading.
Best complete courseCySA+ CS0-004 Complete Certification Course
Best low-cost courseCompTIA CySA+ (CS0-004) Complete Course & Practice Exam
Best bookCySA+ Study Guide, 4th editionWork with real tool output. Read sample SIEM alerts, run a free vulnerability scanner against a home lab, and map one incident to MITRE ATT&CK as you study each domain.
Use fresh questions to find weak domains, then review why each option is right or wrong. Practise PBQs that ask you to read logs or scan results, and take full timed tests before booking.
CySA+ Practice Test (V4)
Free CySA+ Practice Test (CS0-004)CompTIA CySA+ (CS0-004) Practice Exam PackBuy a voucher and schedule with Pearson VUE. The voucher is valid for 12 months, subject to the exam retirement date.
A September 2026 CS0-004 pass report says reading logs was the key skill and found the multiple-choice questions harder than the PBQs. Another candidate, who passed on a third attempt, points to log inputs and outputs, MITRE ATT&CK, the Diamond Model and scan types.
Candidates who saw both versions describe CS0-004 as more hands-on, with some questions on AI in security operations and on application testing such as SAST and DAST.
People moving on from Security+ note the overlap in fundamentals and recommend spending study time on SIEM and EDR tooling, vulnerability workflows and incident response.