Splunk vs Wazuh: Which Should a SOC Beginner Learn First?

Two names come up again and again when people start learning SOC work: Splunk and Wazuh. They are often compared as if you must pick one. In practice they do different jobs, and a beginner gains most by understanding both. This guide explains what each does, where they overlap and how to practice with them.

What a SIEM Does

A security information and event management (SIEM) system collects logs from servers, laptops, firewalls and applications, stores them in one place, and lets analysts search them and raise alerts. When an alert fires, the analyst uses the SIEM to answer three questions: what happened, on which machines, and is it still happening.

Splunk in Brief

Splunk is a commercial platform for searching and analyzing machine data, now owned by Cisco. Analysts work in its search language, SPL, to filter events, build tables and timelines, and turn searches into alerts and dashboards. Many large companies and managed security providers use it, so it appears often in SOC job listings. A free license with a daily data limit is enough for a home lab.

Wazuh in Brief

Wazuh is a free, open-source security platform. You install a small agent on each computer, and it reports security events, file changes, configuration problems and known vulnerabilities to a central server, which applies detection rules and raises alerts. It works as both a SIEM and an endpoint monitoring tool. Because it costs nothing, smaller companies use it, and anyone can build a full lab with it.

The Main Differences

• Cost. Splunk is licensed by data volume or workload; Wazuh is free, and you pay only for the servers it runs on.
• Starting point. Splunk starts from data: you bring logs in and write searches. Wazuh starts from endpoints: its agents and built-in rules give you alerts on day one.
• Skill you build. Splunk trains you to ask questions of data with SPL. Wazuh trains you to understand endpoint telemetry, rules and how detections are tuned.
• Where you meet them. Splunk is common in large enterprise SOCs. Wazuh is common in smaller teams, in labs and alongside other tools.

Which One Do Employers Ask For?

Splunk is the more established product in large enterprises, so expect to see it named more often, but read current listings yourself before you decide. Employers care more that you can investigate an alert and write a clear case note than which product you used, and the skills move between tools easily.

Our Suggestion: Learn the Work, Using Both

Learn Wazuh to understand where alerts come from: agents, Windows and Linux logs, and rules. Learn Splunk to get fast at searching and building timelines. Add Sysmon on Windows machines, which records process starts, network connections and other detail that default Windows logs miss. Then learn Sigma, a shared format for writing detections that can be converted for Splunk, Wazuh and other platforms. Our Splunk search basics, Wazuh for beginners and Windows event IDs guides show where to start.

A Simple Home Lab

• One Linux virtual machine running the Wazuh server and dashboard.
• One Windows virtual machine with Sysmon and the Wazuh agent installed.
• A Splunk instance on the free license, with the Windows logs forwarded to it as well.
• An attacker machine, such as Kali Linux, to generate activity you can then find. Attack only machines in your own lab.
• A laptop with 16 GB of RAM or more makes running these together comfortable.

Where This Fits in a SOC Career

Tools are the easy part to list on a résumé. What makes a SOC analyst useful is judgment: which alert matters, what evidence proves it, and what to write for the next shift. Our guide to what a SOC analyst does covers the role. Our SOC analyst, Splunk, Wazuh and DFIR course teaches both tools with Sysmon and Sigma, then incident response and forensics, ending in a timed multi-alert simulation.