Tuesday, January 27, 2026

Security Onion Essentials 2026

›
We've updated our popular Security Onion Essentials video series!
Thursday, January 15, 2026

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...
Tuesday, January 6, 2026

New Video: Introduction to Security Onion 2.4

›
Check out the latest version of one of our most popular videos: Introduction to Security Onion 2.4
Wednesday, December 31, 2025

Security Onion 2025 Year in Review

›
2025 has been our best year ever! Let's take a look at how Security Onion has improved this year. Security Onion 2.4.120 https://blog.se...

Early Bird Discount for upcoming Security Onion Fundamentals for Analysts and Threat Hunters Class in Colorado

›
Our "Security Onion Fundamentals for Analysts and Threat Hunters" class will be running Tuesday April 21, 2026 through Friday Apri...
Wednesday, December 24, 2025

Security Onion Documentation printed book now updated for Security Onion 2.4.200!

›
We've been offering our Security Onion documentation in book form on Amazon for a few years and it's now been updated for the recent...
Friday, December 19, 2025

Early Bird Discount for Upcoming Security Onion Training Class

›
Our popular "Security Onion Fundamentals" class will be running Tuesday April 28, 2026 through May 1, 2026 in Alpharetta GA. Use t...
Tuesday, December 16, 2025

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...
Monday, November 3, 2025

Security Onion Documentation printed book now updated for Security Onion 2.4.190!

›
We've been offering our Security Onion documentation in book form on Amazon for a few years and it's now been updated for the recent...

Security Onion Conference 2025 Recordings Now Available!

›
Friday, October 31, 2025

Spooky malware analysis!

›
It's October 31, so let's analyze some spooky malware! Thanks to Brad Duncan for sharing this pcap from 2025-10-08 on his malware tr...
Friday, October 24, 2025

Security Onion 2.4.190 now available including Onion AI Assistant for Pro Customers!

›
Security Onion 2.4.190 is now available and includes several new features, updated components, and many quality of life improvements!  For S...
Thursday, September 25, 2025

Early Bird Discount for upcoming Security Onion Fundamentals Class

›
Our popular "Security Onion Fundamentals" class will be running Tuesday February 24 through Friday February 27, 2026 in San Antoni...
Tuesday, September 23, 2025

Security Onion Documentation printed book now updated for Security Onion 2.4.180!

›
We've been offering our Security Onion documentation in book form on Amazon for a few years and it's now been updated for the recent...
Wednesday, September 17, 2025

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

›
Security Onion 2.4.180 is now available and includes several new features, updated components, and many quality of life improvements! For Se...
Monday, August 25, 2025

Quick Malware Analysis: NETSUPPORT RAT pcap from 2025-08-20

›
Thanks to Brad Duncan for sharing this pcap from 2025-08-20 on his malware traffic analysis site! Due to issues with Google flagging a warni...