🛠️ CISOs: 10 Free Open-Source Security Tools You Need 🛠️

Managing cybersecurity doesn’t have to come with a huge price tag. Open-source tools provide powerful protection, detection, and monitoring without the licensing costs.

Here’s a curated list of 10 free open-source security tools every CISO should know:

1️⃣ Wazuh – SIEM and endpoint monitoring platform for threat detection and compliance.
https://wazuh.com/

2️⃣ OSQuery – Query endpoints with SQL-like commands for visibility and auditing.
https://osquery.io/

3️⃣ MISP (Malware Information Sharing Platform) – Share, store, and consume threat intelligence.
https://www.misp-project.org/

4️⃣ TheHive Project – Collaborative incident response and case management platform.
https://thehive-project.org/

5️⃣ Cortex – Analysis engine to automate threat investigation workflows.
https://www.theforeman.org/plugins/cortex/

6️⃣ GRR Rapid Response – Remote live forensics and incident response framework.
https://github.com/google/grr

7️⃣ Security Onion – Linux distro packed with monitoring, detection, and threat hunting tools.
https://securityonionsolutions.com/

8️⃣ Nikto2 – Web server scanner to detect dangerous files and outdated software.
https://github.com/sullo/nikto

9️⃣ Trivy – Container and Kubernetes vulnerability scanner.
https://aquasecurity.github.io/trivy/

🔟 MITRE ATT&CK Navigator – Visualize attacker tactics and techniques for improved defense.
https://attack.mitre.org/

Combine these tools to build a strong security foundation, enhance visibility, and respond to threats faster.

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