The 4 CySA+ CS0-003 Domains Explained
CySA+ CS0-003 domain weights, what each one covers and the hands-on skills the exam expects from SOC analysts.
CySA+ domains · 6 min read · updated 2026-09-04
CySA+ CS0-003 measures four domains, and their weights tell you exactly how the exam sees the SOC analyst job: a quarter on threat and vulnerability management, a third on incident response.
Threat and Vulnerability Management (22%) and Software & Systems Security (18%)
Threat management covers threat intelligence, indicator analysis, attack frameworks like MITRE ATT&CK and the complete vulnerability management cycle. Systems security covers hardening, cloud and identity configurations and secure software practices.
The pairing matters: you are expected to connect a vulnerability to the exploit that abuses it and to the hardening that prevents it - one chain, three questions.
Security Operations and Monitoring (25%) and Incident Response (35%)
Operations is the tooling heart: SIEM correlation, log and packet analysis, EDR, SOAR and the analytics that separate signal from noise. Incident response is the heaviest domain - playbooks, containment strategy, forensics and stakeholder communication.
For IR, memorise the order of operations and the evidence rules: order of volatility, chain of custody and who gets told what, and when. These details decide exam questions and real incidents alike.
How the weights should shape your plan
Roughly 60% of your points come from operations and incident response, so practice should tilt the same way: read logs, follow detection writeups and rehearse IR sequences until they are reflexes.
Vulnerability management is the best-studied domain for most candidates - resist spending your safe hours there.
Frequently asked questions
- How many domains does CySA+ CS0-003 have?
- Four: Threat and Vulnerability Management (22%), Software and Systems Security (18%), Security Operations and Monitoring (25%) and Incident Response (35%).
- Is CySA+ harder than Security+?
- Generally yes for candidates without SOC exposure: CySA+ expects you to analyse logs, indicators and vulnerabilities rather than recognise definitions. Experienced SOC analysts often find it more comfortable than Security+.
- How long is the CySA+ certification valid?
- Three years from your exam date. You renew through CompTIA continuing education units (CEUs) or by passing a higher or newer CompTIA certification.
Keep reading for CySA+
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