Mission in Motion with @LayneRiggs99, @Team_FRM, @NASCAR & @NASCARSanDiego. Thank you for the epic ride Sir.

WE’RE LIVE AT TECHNET INDO‑PACIFIC. Mission‑critical collaboration isn’t just conversation, it’s how teams coordinate, decide, and act when the stakes are highest. The Mattermost team is on the ground in Honolulu this week, showing how operators can bring people, tools, and mission workflows together in one secure, sovereign operational environment. Come meet the team, see Mattermost in action, and explore what’s new. Booth M31 October 27–29 | Honolulu See you at the booth. #TechNetIndoPacific #AFCEA #MissionCritical #NationalSecurity #DefenseTech #SecureCollaboration #AirGapped #ZeroTrust #Mattermost

⏳ 24 hours left — last chance to register. Secure collaboration can’t stop at chat — especially when defense and national security teams need to investigate threats and coordinate across agencies without exposing or centralizing sensitive data. Tomorrow, Mattermost and Duality will show how mission analysts can run confidential, cross‑domain queries directly from Mattermost and receive only the approved result. In this 45‑minute session, you’ll see how teams can coordinate next actions while every participating organization retains full control of its data. Register now, only 24 hours left. brighttalk.com/webcast/19414… #SecureCollaboration #DefenseTech #GovTech #DataPrivacy #ZeroTrust #Mattermost #DualityTech

Mattermost is proud to sponsor the Airlift/Tanker Association Convention & Symposium 2026, supporting the mobility Airmen who keep global operations moving. From rapid, secure coordination to mission‑ready collaboration across dispersed teams, Mattermost helps mobility forces accelerate decisions while maintaining full control over sensitive information. We’re honored to stand alongside the Airlift/Tanker community as it advances the future of global air mobility. See you at A/TA 2026. #ATA2026 #AirliftTanker #MobilityAirmen #Mattermost #MissionReady #SecureCollaboration #DefenseTech #DigitalReadiness

The future of sovereign AI just accelerated. Mattermost is introducing Sovereign Agentic Solutions — specialised, mission‑ready agents that run inside air‑gapped and classified environments, powered by trusted open‑weight and on‑prem models, and fielded by forward‑deployed engineers across NATO and Five Eyes nations. All with every action under human authority and no data leaving the boundary. Sovereign AI isn’t a future concept, it’s now operational. And it’s built for the environments where failure isn’t an option. mattermost.com/newsroom/pres… #SovereignAI #MissionCritical #AirGapped #ZeroTrust #QuantumSafe #NationalSecurity #DefenseTech #HumanMachineTeaming #Mattermost

GovWare 2026 was a powerhouse week, and Julie Manalo brings it all together in her wrap‑up video. From breakthrough conversations on secure collaboration to deep dives with partners across the region, Mattermost showed how mission‑critical teams can move faster and stay in control. Julie’s recap highlights the energy, the insights, and what’s next for secure, AI‑ready operations. Watch her wrap‑up to see how organizations are reshaping the future of trusted collaboration. #GovWare2026 #Mattermost #Cybersecurity #SecureCollaboration #FSI #ZeroTrust #AIReadyOps #DigitalResilience

Mattermost helps Z‑CERT turn everyday security conversations into sector‑wide resilience. In Dutch healthcare, the real barrier to effective incident response isn’t technology — it’s trust. Z‑CERT uses its self‑hosted Mattermost community to build that trust long before a crisis, giving security professionals a secure, familiar place to connect, share knowledge, and coordinate when timing matters most. From early‑signal discussions to multi‑organization incident coordination, Z‑CERT shows how a sovereign, open‑source platform strengthens relationships, accelerates decision‑making, and expands reach across a highly regulated sector. mattermost.com/resources/dis… #CyberSecurity #HealthcareSecurity #Mattermost #DataSovereignty #OpenSource #IncidentResponse #CollaborationTools

Behind the mission: Interoperability. When different systems or organizations can share information and work together. Missions rarely belong to one team, one tool or one organization. Partners, agencies and contractors all hold a piece of the picture. Interoperability is what lets that information move between them, so everyone can act on it together. What does interoperability look like on your team? #Mattermost #Interoperability #DefenseTech #MissionCritical #SecureCollaboration #BehindTheMission

Our Customer Advisory Board met this week, and the conversations were nothing short of invaluable. Every session reminded us why we build Mattermost the way we do, by listening closely to the people who rely on our platform to run their businesses every single day. Your feedback isn’t just helpful; it’s gold. It shapes our roadmap, sharpens our priorities, and ensures we’re solving the real‑world challenges teams face in mission‑critical environments. Thank you to all our CAB members for your candor, your insights, and your partnership. We’re building the future of secure collaboration with you, not just for you. #Mattermost #CustomerAdvisoryBoard #SecureCollaboration #OpenSource #DigitalOperations #CustomerDriven #EnterpriseSoftware #TeamworkThatMatters

NEW: Mattermost v12.0.1, v11.11.3, v11.10.4 and v11.7.14 Extended Support Release are now available. See more details in the changelogs docs.mattermost.com/product-….

Before you deploy an AI agent, set the controls first. In Mattermost, every agent is configured on purpose: 01 Service: Choose the LLM service the agent uses. 02 Model: Use the service default or set an override. 03 User access: Decide which users can interact with the agent. 04 Channel access: Decide which channels the agent can be mentioned in. 05 MCP tools: Choose all tools or only selected ones. On Enterprise Advanced, you can also configure an optional Fallback Service. Useful AI starts with clear controls. #Mattermost #AgenticAI #AIGovernance #MCP #EnterpriseAI #SecureAI

If you had to sum up the value of Mattermost and Arqit working together for a CISO or operational leader, it comes down to one thing: real control. In this GovWare clip, Steve (Mattermost) and Sean (Arqit) explain that you don’t have to choose between capability and sovereignty. You can have both. 🎥 Watch the GovWare conversation. #Mattermost #Arqit #GovWare #CISO #SovereignTech #QuantumSafe #ZeroTrust #MissionCriticalOps #DefenseTech #DigitalOperations

For organisations that need sovereign control without getting locked into a single vendor, the future isn’t monolithic — it’s ecosystem‑driven. In this GovWare clip, Steve (Mattermost) and Sean (Arqit) explain how sovereignty doesn’t come from choosing one vendor. It comes from choosing an ecosystem that respects your boundaries. 🎥 Watch the GovWare conversation. #Mattermost #Arqit #GovWare #SovereignTech #SecureByDesign #QuantumSafe #ZeroTrust #MissionCriticalOps #DefenseTech #DigitalOperations

⏳ One week left — don’t miss this. Secure collaboration can’t stop at chat, especially for defense and national security teams working across agencies and coalition partners. In just one week, Mattermost and Duality will show how mission analysts can run confidential, cross‑domain queries directly from Mattermost — without exposing or centralizing sensitive data. 🎙️ Ronen Cohen, VP Strategy @ Duality 🎙️ James Mullins, VP Sales @ Mattermost 🎙️ Adi Hirschstein, VP Product @ Duality brighttalk.com/webcast/19414… #SecureCollaboration #DefenseTech #GovTech #DataPrivacy #ZeroTrust #Mattermost #DualityTech

Mattermost Named Market Leader in Secure Communications at Cyber Defense Magazine’s Top InfoSec Innovators 2026 We’re proud to share that Mattermost has been recognized as Market Leader in Secure Communications in Cyber Defense Magazine’s Top InfoSec Innovators 2026 Awards. This honor highlights our commitment to delivering mission‑critical, secure collaboration for defense, intelligence, and highly regulated industries, enabling teams to operate with confidence across air‑gapped, classified, and sovereign environments. Thank you to our customers, partners, and global community for driving innovation that keeps critical operations moving securely. #Mattermost #CyberDefenseMagazine #TopInfoSecInnovators #SecureCollaboration #SecureCommunications #Cybersecurity #MissionCritical #ZeroTrust #DefenseTech

“Production cutover is paused. @incident-team confirm before rollback.” Some messages can’t be allowed to scroll past. Here’s how Mattermost makes sure they don’t. 🔹 Message priority: Standard, Important or Urgent. The priority travels with the message. 🔹 Persistent notifications: For an urgent @mention, notifications can repeat until the recipient acknowledges, reacts or replies. 🔹 Request acknowledgements: Recipients select Acknowledge to confirm they’ve read the message and taken any necessary action. Urgent messages request one by default. Message priority tells people what needs attention. Acknowledgements confirm it got it. #Mattermost #IncidentResponse #DevOps #SRE #MissionCritical #SecureCollaboration

Same channel. Two separate workspaces. When an incident spans organizations, partner teams need to coordinate in real time. But nobody wants to give up control of their own environment to make that happen. With connected workspaces in Mattermost, your team and a partner organization can share a channel. Everyone sees the same live conversation, and each side keeps its own deployment, its own channels and its own governance. One shared conversation. Separate operational control. #IncidentResponse #CrossOrgCollaboration #CriticalInfrastructure #SecureCollaboration #Interoperability #Mattermost

“Secure by design” matters most in the daily workflow. In this GovWare clip, Steve (Mattermost) and Sean (Arqit) show how it becomes real for operators — quantum‑safe device trust, user‑scoped access, and collaboration that stays predictable and protected across every boundary. 🎥 Watch the conversation. #Mattermost #Arqit #GovWare #SecureByDesign #QuantumSafe #ZeroTrust #MissionCriticalOps

What changes for customers when Mattermost and Arqit come together? Day‑to‑day operations get simpler, safer, and faster. In this GovWare clip, Steve (Mattermost) and Sean (Arqit) explain how quantum‑safe device authentication, user‑scoped access, and secure collaboration across trust boundaries turn into practical gains for operators — less friction, tighter control, and workflows that stay inside sovereign infrastructure. 🎥 Watch the GovWare conversation. #Mattermost #Arqit #GovWare #QuantumSafe #ZeroTrust #SecureCollaboration #MissionCriticalOps

Security events matter most when teams see them where they work. Evan and Anthony explain why surfacing things like device quarantine or key rotation inside Mattermost is so valuable: it brings critical security signals directly into the operational workflow. No hunting through dashboards. No waiting for someone to relay an alert. Teams can react immediately, adjust access, and keep missions moving without switching tools. It’s real‑time awareness, right in the channel where decisions happen. #Mattermost #Arqit #SecureCollaboration #ZeroTrust #CyberSecurity #MissionReady #OperationalResilience

Our team is heading to @AFCEA TechNet Indo‑Pacific 2026 — where defense, government, and industry leaders come together to advance mission‑ready technology for the Indo‑Pacific region. As operational demands grow more complex, teams need secure, flexible, and sovereign collaboration that works across distributed environments. Mattermost delivers user‑scoped access, air‑gapped deployment options, and mission‑grade agent workflows built for high‑trust operations. If you’re attending TechNet Indo‑Pacific at the Hilton Hawaiian Village this October, connect with us to explore how secure collaboration can accelerate readiness, resilience, and operational advantage across your mission. #Mattermost #AFCEA #TechNetIndoPacific #DefenseTech #SecureCollaboration #MissionCritical #Cybersecurity #GovTech #DigitalOperations