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Security Onion

@securityonion.bsky.social
597 followers 4 following 122 posts

By defenders. For defenders. Peel back the layers of your network and make your adversaries cry. www.securityonion.com

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Security Onion @securityonion.bsky.social · 22/09/2026
Good morning, Rocket City! If you're at the National Cyber Summit in Huntsville this week, stop by booth 813 to see the Security Onion Solutions team and learn more about the best network monitoring and threat hunting platform out there. See you soon!
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Security Onion @securityonion.bsky.social · 21/09/2026
Security Onion Solutions is coming to GrrCON! Join us on Thursday and Friday at booth number 91 to learn how to peel back the layers of your network and make the adversaries cry. See you there!
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Security Onion @securityonion.bsky.social · 11/09/2026
HOTFIX released! We have released a hotfix to this week's 3.3.0 release to fix two issues:
blog.securityonion.net
Security Onion 3.3.0 Hotfix 20260911 Now Available!
Earlier this week, we released Security Onion 3.3.0: https://blog.securityonion.net/2026/09/security-onion-330-now-available.html Today we a...
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Security Onion @securityonion.bsky.social · 08/09/2026
Security Onion 3.3.0 is now available, including improvements to the new Agentic AI functionality, updated components, better Logstash tuning options, and more! Blog post with all of the details is in the comments. It's time to make some soup!
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Security Onion @securityonion.bsky.social · 19/08/2026
Good morning, Garden City! If you're at #AFCEATechnet Augusta this week, come see us at booth P11 and learn about using Security Onion to peel back the layers of your network and make the bad guys cry.
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Security Onion @securityonion.bsky.social · 06/08/2026
Registration is NOW OPEN for Augusta Cyber Week 2026, from October 19-24. This includes a four day instructor-led Security Onion training course, the twelfth annual Security Onion Conference, and wrapping up with BSides Augusta! See the link for more details. blog.securityonion.net/2026/08/regi...
blog.securityonion.net
Registration Now Open for Augusta Cyber Week 2026!
Registration is now open for Augusta Cyber Week in beautiful Augusta GA from October 19, 2026 through October 24, 2026! This includes: 4-day...
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Security Onion @securityonion.bsky.social · 05/08/2026
One of the new features that we released in Security Onion 3.2 last week was Investigative Playbooks for the included Sigma detection rules.
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Security Onion @securityonion.bsky.social · 03/08/2026
ICYMI: New Security Onion release last week.
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Security Onion @securityonion.bsky.social · 30/07/2026
Security Onion 3.2.0 is NOW AVAILABLE, with a whole bunch of new features and quality of life improvements. - Initial implementation of Agentic AI functionality - Gemma now available - Datastream Lifecycle Management - ES|QL support for Sigma rules - Updates to nearly two dozen major components
blog.securityonion.net
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Security Onion @securityonion.bsky.social · 16/07/2026
Excited to be sponsoring BSides Atlanta this year - looking forward to seeing everyone in October! bsidesatl.info
bsidesatl.info
Home
Saturday, October 3rd, 2026 - Georgia Tech Hotel & Conference Center - 800 Spring St. NW, Atlanta, GA
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Security Onion @securityonion.bsky.social · 08/07/2026
We are once again hosting our annual user conference in beautiful Augusta, GA on October 23, and we want to hear from you! securityonionsolutions.com/conference/
securityonionsolutions.com
Security Onion Solutions
Security Onion Solutions, LLC
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Security Onion @securityonion.bsky.social · 07/07/2026
HAPPY BIRTHDAY TO US! Today marks the twelfth birthday of Security Onion Solutions -- a dozen years of providing training, support, and other services on top of the free and open Security Onion platform. Here's to many more!
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Security Onion @securityonion.bsky.social · 06/07/2026
USING SOFTWARE RAID? We've identified an issue with an updated release of mdadm that could cause problems for Security Onion deployments using software RAID filesystems. If that applies to you, this blog post has more information: blog.securityonion.net/2026/07/poss...
blog.securityonion.net
Possible Software RAID Issue With Recent mdadm Package
We identified an issue with mdadm version "mdadm - v4.4 - 2024-11-07 - 4" that can cause software RAID issues after a reboot. We have remove...
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Security Onion @securityonion.bsky.social · 06/07/2026
Curious about the Human-Centered Investigative Playbook (HCIP) standard that underlies our Guided Analysis feature? If you're going to be at @bsidespgh.bsky.social this week, come see our Senior Engineer @infosecgoon.bsky.social, presenting in the afternoon on that very topic. Hope to see you there!
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Security Onion @securityonion.bsky.social · 02/07/2026
JUST POSTED: We've just released an update to our Introduction to Security Onion overview video, recorded with Security Onion 3. youtu.be/xKWn_YlVOGo
youtu.be
Introduction to Security Onion 3
YouTube video by Security Onion
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Security Onion @securityonion.bsky.social · 24/06/2026
DID YOU KNOW? Security Onion Pro includes a feature called Manager of Managers, or MoM, which leverages the Security Onion API to allow access to other Security Onion installations in your environment from a central console.
youtu.be
Security Onion Pro: Manager of Managers
YouTube video by Security Onion
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Security Onion @securityonion.bsky.social · 12/06/2026
DID YOU KNOW? It's possible to enable or disable Suricata NIDS rules in Security Onion using regular expressions -- if you want to turn off all of those ET INFO or TOR alerts, this is an easy way to do it. And the best part is it will apply to new rules that are added to the set in the future.
docs.securityonion.net
NIDS - Security Onion Documentation
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Reposted by Security Onion
Doug Burks @dougburks.bsky.social · 09/06/2026
🚀Introducing SO-CRATES 1.0 — Security Onion Containerized Rapid Analysis of Threats, Evil, and Sus! SO-CRATES is a single container image for analyzing pcap files, log files, and binary files. It was formerly known as OhMyPCAP.
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Security Onion @securityonion.bsky.social · 04/06/2026
On this day in 2009 the very first release of Security Onion hit the Internet. A lot has changed since then, but it's still the best free and open solution to help you peel back the layers of your network and see what's really happening.
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Security Onion @securityonion.bsky.social · 02/06/2026
Good morning Charm City! If you're at #AFCEATechnet, come to booth 3242 to see the legendary Michael Stokes and learn about using Security Onion to peel back the layers of your network.
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Security Onion @securityonion.bsky.social · 01/06/2026
It's time for O's, Bohs, and SO -- Security Onion Solutions is coming to Baltimore! Looking forward to seeing all our friends at #AFCEATechnet in Charm City this week, come see us at booth 3242 to find out how we can help you peel back the layers of your network and make the bad guys cry.
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Security Onion @securityonion.bsky.social · 28/05/2026
Security Onion 3.1.0 Hotfix 20260528 Now Available! We've released a hotfix to Security Onion 3.1.0 to address issues for deployments with Heavy Nodes or custom Logstash pipelines - please check out this blog post for more information. blog.securityonion.net/2026/05/secu...
blog.securityonion.net
Security Onion 3.1.0 Hotfix 20260528 Now Available!
Last week, we released Security Onion 3.1.0: https://blog.securityonion.net/2026/05/security-onion-310-now-available-with.html Today we are ...
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Security Onion @securityonion.bsky.social · 27/05/2026
Our printed documentation book has been updated for Security Onion 3.1 and is available from Amazon now!
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Security Onion @securityonion.bsky.social · 21/05/2026
IT'S TIME FOR SOUP! Security Onion 3.1.0 is now available and includes new features, updated components, and many quality-of-life improvements! Get all the details on our blog: blog.securityonion.net/2026/05/secu...
blog.securityonion.net
Security Onion 3.1.0 Now Available with Elastic 9.3.3, Suricata 8.0.5, Zeek 8.0.8, and much more!
Security Onion 3.1.0 is now available and includes new features, updated components, and many quality of life improvements! For a full scree...
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Security Onion @securityonion.bsky.social · 21/05/2026
DID YOU KNOW? Starting in version 2.4.170, Security Onion Pro users have access to a new type of Security Onion node, the Hypervisor Node.
docs.securityonion.net
Hypervisor — Security Onion Documentation 2.4 documentation
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Security Onion @securityonion.bsky.social · 18/05/2026
SAVE THE DATE! We will once again be hosting the Security Onion Conference in beautiful Augusta, GA on October 23rd. Registration will open on August 7.
blog.securityonion.net
Security Onion Conference 2026 Save the Date and CFP
This year
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Security Onion @securityonion.bsky.social · 18/05/2026
ICYMI: Last week we had a webinar with our friends from Garland Technology on using their TAPs and packet brokers along with Security Onion for a holistic view of what's happening on your network. Check it out! www.youtube.com/watch?v=VvBl...
youtube.com
See Everything, Miss Nothing Enhancing Threat Detection with Complete Packet Visibility
YouTube video by Garland Technology
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Security Onion @securityonion.bsky.social · 12/05/2026
THURSDAY: Join our Senior Engineer Matthew Gracie, along with Chris Bihary and our friends from Garland Technology, for the webinar "See Everything, Miss Nothing: Enhancing Threat Detection with Complete Packet Visibility and Full Packet Capture".
events.gcc.teams.microsoft.com
Microsoft Virtual Events Powered by Teams
Microsoft Virtual Events Powered by Teams
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Security Onion @securityonion.bsky.social · 11/05/2026
DID YOU KNOW? Security Onion can be configured to automatically perform reverse DNS lookups to provide hostname information in the SOC interface. Just turn on the "enableReverseLookup" function in Configuration and enjoy!
Screenshot of a Suricata alert for a suspicious DNS query, showing hostnames for both the requesting server and the authoritative DNS.
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Security Onion @securityonion.bsky.social · 08/05/2026
Security Onion and "Dirty Frag": blog.securityonion.net/2026/05/secu...
blog.securityonion.net
Security Onion and Linux Kernel Dirty Frag Vulnerability CVE-2026-43284
There is a new local privilege escalation called Dirty Frag (CVE-2026-43284): https://access.redhat.com/security/cve/cve-2026-43284 Updated ...
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Security Onion @securityonion.bsky.social · 07/05/2026
THROWBACK THURSDAY: Who remembers the name of our original hunting interface from the early days of Security Onion? It was really hard to let it go. #tbt
We still called it Bro back then, too.
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Security Onion @securityonion.bsky.social · 07/04/2026
Security Onion 2.4.211 Hotfix 20260407 Now Available! blog.securityonion.net/2026/04/secu...
blog.securityonion.net
Security Onion 2.4.211 Hotfix 20260407 Now Available!
Last month, we released version 2.4.211: https://blog.securityonion.net/2026/03/security-onion-24211-is-now-available.html Today we are rele...
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Security Onion @securityonion.bsky.social · 31/03/2026
Security Onion 3.0.0 Now Available with New and Improved Interface and Much More! blog.securityonion.net/2026/03/secu...
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Security Onion @securityonion.bsky.social · 30/03/2026
Security Onion 3 is coming soon! Are you ready?
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Security Onion @securityonion.bsky.social · 09/03/2026
Security Onion 3.0 Coming Soon! blog.securityonion.net/2026/03/secu...
blog.securityonion.net
Security Onion 3.0 Coming Soon!
Last week, we released Security Onion 2.4.210: https://blog.securityonion.net/2026/03/security-onion-24210-now-available-with.html This is o...
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Security Onion @securityonion.bsky.social · 02/03/2026
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...
blog.securityonion.net
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...
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Security Onion @securityonion.bsky.social · 02/02/2026
Check out our latest video! Security Onion Pro: Onion AI Assistant youtu.be/M0xGbuKxBig
youtu.be
Security Onion Pro: Onion AI Assistant
YouTube video by Security Onion
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Security Onion @securityonion.bsky.social · 27/01/2026
We've updated our popular Security Onion Essentials video series! Peel back the layers and make your adversaries cry! www.youtube.com/playlist?lis...
youtube.com
Security Onion Essentials 2026 - YouTube
Security Onion Essentials by Matt Gracie, updated for 2026 using 2.4.190 and 2.4.200.
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Security Onion @securityonion.bsky.social · 16/01/2026
Security Onion 2.4.201 now available with Suricata and Zeek Updates! blog.securityonion.net/2026/01/secu...
blog.securityonion.net
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...
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Security Onion @securityonion.bsky.social · 06/01/2026
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
youtu.be
Introduction to Security Onion 2.4
YouTube video by Security Onion
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Security Onion @securityonion.bsky.social · 19/12/2025
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
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Security Onion @securityonion.bsky.social · 16/12/2025
Security Onion 2.4.200 now available with major improvements for our popular Onion AI Assistant! blog.securityonion.net/2025/12/secu...
blog.securityonion.net
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...
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Security Onion @securityonion.bsky.social · 27/10/2025
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!
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Security Onion @securityonion.bsky.social · 17/09/2025
Security Onion 2.4.180 now available including new features, updated components, and quality of life improvements! blog.securityonion.net/2025/09/secu...
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Security Onion @securityonion.bsky.social · 12/08/2025
🚨 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...
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Security Onion @securityonion.bsky.social · 25/06/2025
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.
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Security Onion @securityonion.bsky.social · 18/06/2025
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...
youtube.com
Sneak Peek: Security Onion Playbooks
YouTube video by Security Onion
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Security Onion @securityonion.bsky.social · 12/06/2025
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...
youtube.com
Security Onion Pro Notifications
YouTube video by Security Onion
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Security Onion @securityonion.bsky.social · 12/05/2025
🧅♥️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!
Tattoo of an onion with an arrow through it and a banner beneath that says MOM
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Reposted by Security Onion
Doug Burks @dougburks.bsky.social · 25/04/2025
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...
youtube.com
Peeling Back the Network Layers with Doug Burks | S3 E2
YouTube video by Simply Cyber - Gerald Auger, PhD
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