Today we wish Happy Birthday to the US Army, a legacy of service, strength, and unwavering commitment to the mission. From its founding in 1775 to today’s multi‑domain operations, Soldiers have stood at the forefront of defending the nation and supporting partners around the world. Their dedication, discipline, and readiness continue to inspire all who work alongside them. Mattermost is proud to support the Soldiers and mission teams who rely on secure, mission‑ready collaboration to operate with speed and confidence across every environment. To the U.S. Army community — thank you for 251 years of service. #ArmyBirthday #USArmy #MissionReady #DefenseTech #NationalSecurity

Mattermost is fired up for an unforgettable @NASCAR San Diego Weekend at @CoronadoNavy, and we’re showing up in a big way. We’re taking over the iconic Turn 11 suite structure as the official Mattermost Suites, giving partners, customers, and guests front‑row views of one of the most intense, technical sections of the entire 3.4‑mile course. It’s premium hospitality at the first NASCAR race ever held on an active military base, and we can’t wait to welcome everyone trackside. And the excitement doesn’t stop there. We’re hitting the grid with Front Row Motorsports and Layne Riggs for Friday night’s CRAFTSMAN Truck Series showdown. Keep an eye out for the No. 34 Ford F‑150, fully outfitted with Mattermost branding across the truck, pit box, and Layne’s custom firesuit, as he takes on this historic street course. #NASCAR #RaceTheBase #LayneRiggs #FrontRowMotorsports #NASCARSanDiego

NEW: v11.7.3, v11.6.5, and v10.11.20 dot releases are now available. See the changelogs for more details: docs.mattermost.com/product-…

Our team will be at TriCyCIS 2026 on 1 July, joining defence, government, industry, and academic leaders as they examine progress on the UK’s Strategic Defence Review one year on. As Defence accelerates its Plan for Change, secure, sovereign, and resilient collaboration is essential for cyber, EM, intelligence, and digital teams operating in contested environments. We’re looking forward to contributing to the conversations shaping how Defence strengthens integration, digital transformation, and mission readiness. If you’re attending, connect with us to explore how Mattermost supports teams working to keep Britain safer at home and stronger abroad. #TriCyCIS2026 #AFCEA #DefenceTech #CyberSecurity #SecureCollaboration #ZeroTrust #MissionCritical #OperationalResilience #SovereignTech #PublicSectorTech

What does AI look like when it actually works where operators work, not just in a lab. That’s the question Nick Brown tackled onsite at the Gartner Security & Risk Management Summit in his Flash Talk: “AI that works where you do: Mattermost Agents in Action.” In this discussion, Nick shows how Mattermost Agents bring AI directly into mission workflows, supporting teams in connected, disconnected, and contested environments, and delivering real operational value without sacrificing sovereignty or control. If you missed it at the Summit, now’s your chance to see how AI can truly operate at mission tempo. #AIAgents #SecureCollaboration #AIGovernance #MissionCritical #CyberSecurity #SRMSummit

A major leap forward for coalition operations just landed. Mattermost, @arch_tis, Arqit, and @whitedotspace have come together to deliver a sovereign, AI‑enhanced, post‑quantum‑secure operational collaboration environment built for Defence Ministries, @NATO Allies, and mission partners worldwide. This new joint capability unifies secure collaboration, Zero Trust ABAC policy enforcement, cryptographic device‑level trust, and AI‑powered institutional learning into a single operational surface — enabling defence teams to coordinate, decide, execute, and learn at mission tempo across connected, disconnected, and contested environments. mattermost.com/blog/mattermo… #archTIS #Arqit #Whitespace #SovereignCollaboration #DefenseTech #ZeroTrust #PostQuantum

We’re excited to join infodass' Data-Centric Security Deep Dive today, bringing together leaders in secure digital transformation, cross‑domain solutions, and mission‑ready technologies. Mattermost powers secure, flexible collaboration for defense, government, and critical infrastructure teams, and partnering with innovators like Infodas strengthens the ecosystem these missions rely on. Looking forward to connecting with the community and demonstrating how Mattermost supports secure workflows at every classification level. infodas.com/en/data-centric-… #Infodas #CyberSecurity #SecureCollaboration #DefenseTech #MissionCritical

Mattermost is heading to React Nexus 2026 — and we’re bringing serious performance engineering to Bengaluru. Our own Ahmed Mohammed Zubair will take the stage to share how Mattermost pushes React applications to true enterprise scale in his session: Load Testing Real React Applications for Production Performance. If you’re building React apps that need to perform flawlessly under real‑world load, this is a session you won’t want to miss. #Mattermost #ReactNexus #ReactJS #PerformanceEngineering #LoadTesting #WebPerformance #Playwright #OpenSource

AI is already inside your collaboration stack — but does your governance actually know what it’s doing there. That’s the question Keith Casey, our Senior Product Manager, tackled onsite at @Gartner_inc Security and Risk Management Summit in his Flash Talk: “AI Moved into Your Collaboration Stack. Does Your Governance Know That?” If you weren’t at the event, here’s your chance to catch what you missed. Is your organization governing the AI that’s already influencing your decisions, data, and operations? #Mattermost #AIGovernance #SecureCollaboration #CyberSecurity #RiskManagement #AIInTheEnterprise #MissionCritical

Mattermost is hitting the track in a major way. We’re proud to partner with @Team_FRM Motorsports and @NASCAR CRAFTSMAN Truck Series points leader Layne Riggs for the first‑ever NASCAR race on an active U.S. military base — NASCAR San Diego Weekend at @CoronadoNavy . Look for the Mattermost‑branded No. 34 Ford F‑150 and pit box as Riggs takes on the 3.4‑mile Coronado Street Course on June 19, during Navy Community Day — honoring the Navy’s 250 years of service. This moment is more than a sponsorship. It’s a celebration of the warfighters, mission‑critical teams, and operators who rely on secure, resilient communication when it matters most. Layne’s precision, discipline, and relentless drive embody the same mission‑first mindset. Let’s go racing. mattermost.com/newsroom/pres… #Mattermost #NASCAR #FrontRowMotorsports #LayneRiggs #RaceTheBase #NASCARSanDiego #Navy250 #MissionCritical #SovereignCollaboration

In this new video, Jason Blais, our VP Product & NATO Alliances, shares how AI has changed the way he thinks, builds, and leads at Mattermost, and why the biggest shift isn’t technical, it’s operational. He digs into how AI is collapsing the distance between idea and execution, which work is disappearing entirely, and where organizations are gaining their first real strategic advantage from machine‑speed decision loops. Jason also tackles the hard questions: how teams balance human judgment with AI assistance, what “great outcomes” now look like for mission teams, and why control over data, decisions, and workflows matters more than ever. #AITransformation #MissionCritical #OperationalResilience #SovereignAI #SecureCollaboration #Mattermost

Big news from Brussels. Today, Mattermost, @arch_tis, Arqit, and @whitedotspace unveiled a breakthrough: a fully integrated, AI‑enhanced operational collaboration capability built for Defence Ministries, @NATO Allies, and coalition partners. See the joint capability in action at TechNet International this week and Eurosatory next week. mattermost.com/newsroom/pres… #Mattermost #archTIS #Arqit #Whitespace #DefenseTech #SovereignCollaboration #ZeroTrust

Don’t miss Jason Blais, our VP of Product & NATO Alliances, taking the stage today at 10:00 for his session: Sovereign AI for Cyber Defence: Closing the Decision Gap in Contested Multi‑Domain Operations. In just 15 minutes, Jason will break down how sovereign, AI‑ready mission collaboration platforms are transforming cyber defence — from automated threat triage to cross‑domain incident coordination to sovereign agentic workflows that keep humans in command at machine speed. If you’re serious about operationalizing AI inside classified, DDIL, and coalition environments, this is the session you want in your day. Catch the talk, then stop by the Mattermost booth to go deeper with the team. #Mattermost #TechNetInternational #SovereignAI #CyberDefence #MissionCritical #C2 #DefenseTech

Mattermost is gearing up for an unforgettable moment at NASCAR San Diego Weekend presented by Anduril — we’re the official naming rights sponsor of the Turn 11 suite structure at @CoronadoNavy, the first NASCAR event ever hosted on an active U.S. military base. Perched above one of the most technical, high‑intensity sections of the 3.4‑mile circuit, the newly branded Mattermost Suites will deliver a premium vantage point as drivers push through the Turn 11 complex. It’s a dynamic space for partners, customers, and mission‑driven teams to connect while taking in world‑class racing. We’re honored to help bring this landmark event to life and to celebrate the Navy’s 250‑year legacy of service. #Mattermost #NASCARSanDiego #RaceTheBase

Day 1 of TechNet International is underway, and the floor is already buzzing with mission‑driven leaders shaping the future of secure, sovereign collaboration. If you’re on site, make your way to the Mattermost booth — the hub for teams who operate where precision, speed, and control define outcomes. See how organizations across defense, national security, and the public sector are using Mattermost to coordinate missions, streamline workflows, and maintain full operational sovereignty in any environment. Stop by, connect with our team, and get a firsthand look at how secure, workflow‑centric collaboration is powering the next era of mission‑critical operations. #Mattermost #TechNetInternational #MissionCritical #SovereignCollaboration #DefenseTech #PublicSectorInnovation

What a week at the @Gartner_inc Security & Risk Management Symposium. From packed Flash Talks to nonstop in‑booth demos, the energy around secure, AI‑ready collaboration was incredible. A huge highlight: @LeighDow and Bill Anderson taking the stage to share how organizations are modernizing incident response and strengthening mission‑critical workflows. Their session sparked some of our most insightful conversations of the week. Thank you to everyone who stopped by, asked questions, joined a demo, or shared your challenges. And if you missed our Flash Talks — good news. We’ll be publishing the full video series later this week. We headed home inspired and ready for what’s next. #GartnerSEC #SecureCollaboration #MissionCritical

Why do so many organizations lose control after detection, not before it? Featured in @Infosecurity, our latest post by James Mullins breaks down a pattern emerging across European incident reviews, NIS2/DORA assessments, and ENISA crisis exercises: - It’s not the technical response that fails first. - It’s the coordination layer. When communication fragments, escalation slows, and leadership loses a shared operational picture, control is already slipping, even when detection and containment are strong. infosecurity-magazine.com/bl… #Mattermost #InfosecEU #CyberResilience #NIS2 #DORA #IncidentResponse #SecureCollaboration

When the pressure spikes and the incident war room spins up, there’s no margin for improvisation. In our latest video, Victor Hernandez, our Senior Solution Architect, answers a question every security, SRE, and operations leader should be asking: “What’s the one thing your team can’t afford to get wrong in an incident war room?” Whether you’re running cyber defense, platform engineering, or mission‑critical operations, Victor’s perspective is a sharp reminder: your war room is only as strong as the communication that holds it together. Watch the video, taken during the @Gartner_inc Security and Risk Management Summit and share what your team prioritizes in high‑pressure incidents. #Mattermost #IncidentResponse #SecureCollaboration #MissionCritical #CyberSecurity

AI is now embedded inside most collaboration platforms — and that means sensitive operational data is already being read by vendor‑controlled models. Our new post explains why sovereign AI fails without securing the environment where work actually happens. Highlights: - The collaboration layer is the biggest blind spot in AI cybersecurity. - Hidden risks: data poisoning, prompt injection, and agent lateral movement. - A clear framework for deploying sovereign AI securely. - How Mattermost keeps AI inside your boundary with self‑hosting, ABAC, MCP, and customer‑owned audit logs. mattermost.com/blog/sovereig… #SovereignAI #AICybersecurity #Mattermost #MissionCritical #SecureCollaboration

How are defence and intelligence teams strengthening secure collaboration as operations become more distributed, data‑driven, and coalition‑oriented? We'll be at the Oracle Defence Tech Summit in Brussels on 25 June to explore exactly that. As leaders from across NATO, government, and industry gather to discuss the future of mission‑ready technology, we’ll be highlighting how secure, self‑hosted collaboration accelerates decision‑making in classified, hybrid, and multinational environments. If you’re attending, we’d welcome the opportunity to connect and discuss how secure collaboration can enhance your operational advantage. oracle.com/uk/defense-intell… #OracleDefenceTechSummit #DefenseTech #SecureCollaboration #MissionCritical #NATO