Security Onion 2.4: Free, open platform for defenders gets huge update

Jul 23, 2023

Security Onion is a free and open platform for threat hunting, enterprise security monitoring, and log management. It has been downloaded over 2 million times and is being used by security teams worldwide. Security Onion 2.4 comes with many updates, and the hotfix 2.4.10 release is available on GitHub.

For network visibility, they offer signature-based detection via Suricata, rich protocol metadata and file extraction using Zeek or Suricata, full packet capture via Stenographer, and file analysis via Strelka.

For host visibility, Security Onion offers the Elastic Agent, which provides data collection, live queries via osquery, and centralized management using Elastic Fleet. Intrusion detection honeypots based on OpenCanary can be added to your deployment for even more enterprise visibility. All these logs flow into Elasticsearch, and they’ve built their own UIs for alerts, dashboards, threat hunting, case management, and grid management.

Over the past year of developing Security Onion 2.4, the developers added new features to give you a better experience and make you more efficient:

Security Onion Console (SOC) has many new features to make you more efficient as a defender:

SOC has many new administration features, so you can spend less time managing your deployment and more time hunting adversaries.

Endpoint telemetry is more powerful and easier to manage.