Security Onion 2.4.211 Hotfix 20260407 Now Available!

blog.securityonion.net/2026/04/secu...

Security Onion 3.0.0 Now Available with New and Improved Interface and Much More!

blog.securityonion.net/2026/03/secu...

Security Onion 3 is coming soon!

Are you ready?

Security Onion 3.0 Coming Soon!

blog.securityonion.net/2026/03/secu...

Security Onion 2.4.210 Now Available with Updated Components and New Features including Local Model Support for Onion AI! For Security Onion Pro customers, we've made major improvements for our popular new Onion AI Assistant. Many folks have been asking for loca...

Security Onion 2.4.210 Now Available with Updated Components and New Features including Local Model Support for Onion AI!

blog.securityonion.net/2026/03/secu...

Security Onion Pro: Onion AI Assistant YouTube video by Security Onion

Check out our latest video!

Security Onion Pro: Onion AI Assistant
youtu.be/M0xGbuKxBig

Security Onion Essentials 2026 - YouTube Security Onion Essentials by Matt Gracie, updated for 2026 using 2.4.190 and 2.4.200.

We've updated our popular Security Onion Essentials video series!

Peel back the layers and make your adversaries cry!

www.youtube.com/playlist?lis...

Security Onion 2.4.201 now available with Suricata and Zeek Updates! Last month, we released Security Onion 2.4.200: https://blog.securityonion.net/2025/12/security-onion-24200-now-available-with.html This wee...

Security Onion 2.4.201 now available with Suricata and Zeek Updates!

blog.securityonion.net/2026/01/secu...

Introduction to Security Onion 2.4 YouTube video by Security Onion

Check out the latest version of one of our most popular videos and see how Security Onion can help you peel back the layers and make your adversaries cry!

Introduction to Security Onion 2.4

youtu.be/NovJe01Ynow

Our popular "Security Onion Fundamentals" class will be running Tuesday April 28, 2026 through May 1, 2026 in Alpharetta GA.

Use the following code before January 31, 2026 to get 10% off!

earlybird

For more info and to register:
securityonionapr2026.eventbrite.com

Security Onion 2.4.200 now available with Major Improvements for our Onion AI Assistant! Security Onion 2.4.200 is now available and includes several new features, updated components, and many quality of life improvements!  For S...

Security Onion 2.4.200 now available with major improvements for our popular Onion AI Assistant!

blog.securityonion.net/2025/12/secu...

Security Onion 2.4.190 now available including Onion AI Assistant!

Introducing the all-new Onion AI, an advanced LLM-based security analyst assistant, built directly into the Security Onion console.

Designed BY defenders FOR defenders!

Security Onion 2.4.180 now available including new features, updated components, and quality of life improvements!

blog.securityonion.net/2025/09/secu...

🚨 Security Onion 2.4.170 now available including JA4, more SOC dashboards, and updated components! 🚨

🔍Let's find more hackers! 🔍

If you like Security Onion, please like and share to help spread the word!

blog.securityonion.net/2025/08/secu...

Security Onion 2.4.160 now available including Playbooks, Guided Analysis, MCP Server, and more! Security Onion 2.4.160 is now available and includes Playbooks and Guided Analysis to help you more quickly triage and respond to alerts! Se...

For more information, please see the blog post!

blog.securityonion.net/2025/06/secu...

This leverages Playbooks to show you plays associated with the alert. These plays include questions which help guide your investigation. Each question has an associated query and the results of that query will be automatically displayed to help you answer the question.

Security Onion 2.4.160 now available including Playbooks, Guided Analysis, MCP Server, and more!

Have you ever had an alert and were unsure of what to do next? In this release, when you expand an alert you'll see a new tab called Guided Analysis.

Sneak Peek: Security Onion Playbooks YouTube video by Security Onion

We've got a new AI-powered Playbooks feature coming in Security Onion 2.4.160 that will turbocharge your analysis and incident response!

www.youtube.com/watch?v=SLGR...

Security Onion Pro Notifications YouTube video by Security Onion

Check out our latest video, covering the Notifications feature in Security Onion Pro. Send your alerts directly to another platform, like email, Slack, or Jira!

www.youtube.com/watch?v=quy8...

Security Onion 2.4.150: Celebrating Mother's Day with MoM (Manager of Managers) Yesterday was Mother's Day and we are very thankful for our mothers! Today, we are releasing Security Onion 2.4.150 which includes a new Pro...

Today, we are releasing Security Onion 2.4.150 which includes a new Pro feature called MoM (Manager of Managers).

If you have multiple Security Onion deployments, check out this new feature that will allow you to manage them from a single manager!

blog.securityonion.net/2025/05/secu...

Tattoo of an onion with an arrow through it and a banner beneath that says MOM

🧅♥️Security Onion 2.4.150: Celebrating Mother's Day with MoM (Manager of Managers) 🧅♥️

Yesterday was Mother's Day and we are very thankful for our mothers!

Peeling Back the Network Layers with Doug Burks | S3 E2 YouTube video by Simply Cyber - Gerald Auger, PhD

Thanks to Simply Cyber for having me on the podcast to talk about @securityonion.bsky.social !

Peeling Back the Network Layers with Doug Burks | S3 E2

www.youtube.com/watch?v=FNB6...

There's also lots of good information in the Elasticsearch section of our documentation:

docs.securityonion.net/en/2.4/elast...

Index Lifecycle Management in Security Onion YouTube video by Security Onion

Need more information on index lifecycle management? Good news, there's a primer on our Youtube channel!

www.youtube.com/watch?v=Y6HV...

Upcoming change to Elasticsearch index management in Security Onion -- read this, especially if you're running a distributed, multinode deployment.

blog.securityonion.net/2025/04/upco...

Index Lifecycle Management in Security Onion YouTube video by Security Onion

Index Lifecycle Management in Security Onion

www.youtube.com/watch?v=Y6HV...

Security Onion is BY defenders FOR defenders!

If you like Security Onion, please scroll to the very top of this thread and LIKE and REPOST the first post of the thread to help spread the word!

THANKS!

Security Onion 2.4.140 now available including Suricata 7.0.9, Zeek 7.0.6, and much more! Security Onion 2.4.140 is now available including Suricata 7.0.9, Zeek 7.0.6, and much more! Component Updates The main focus of this releas...

There are many more fixes included in this release!

For more information, please see the full blog post at:

blog.securityonion.net/2025/03/secu...

This release also adds a new feature to SOC Config that allows you to move certain configuration entries up or down. This includes things like SOC Dashboard queries, SOC Hunt queries, and SOC Actions:

Zeek 7.0.6 includes some bug fixes:

github.com/zeek/zeek/re...