Mattermost

Secure collaboration for technical and operations teams. #opensource

[Mattermost @Mattermost]

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.

https://t.co/muXgKViqaI

#SovereignAI #AICybersecurity #Mattermost #MissionCritical #SecureCollaboration

[Mattermost @Mattermost]

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.

https://t.co/ysqyH0Y3z6

#OracleDefenceTechSummit #DefenseTech #SecureCollaboration #MissionCritical #NATO

[Mattermost @Mattermost]

We'll be at TechNet International next week, and we’re excited to join the leaders shaping the next era of mission‑ready technology.

As defense, government, and industry teams push for faster, more resilient operations, we’re showcasing how secure, self‑hosted collaboration gives organizations the control, agility, and interoperability they need to stay ahead.

Whether teams are coordinating across classified, hybrid, or disconnected environments, Mattermost delivers real‑time communication and workflow automation built for the missions that can’t fail.

#TechNetInternational #AFCEA #SecureCollaboration #MissionCritical #DefenseTech #GovTech

[Mattermost @Mattermost]

AI demos are easy. AI your team can actually use, with governance, context, and accountability, is the hard part. That’s exactly what the new Mattermost Agents V2 delivers.

In our latest blog, Nick Misasi breaks down how Agents V2 turns AI from a clever chat moment into a repeatable, team‑owned operating model.

Agents V2 isn’t about “more AI.” It’s about usable AI, the kind that fits how real teams work under real pressure.

👉 Read the full post: https://t.co/SSmNKKyNkK

#AI #SecureCollaboration #MissionCritical #WorkflowAutomation #SovereignAI

[Mattermost @Mattermost]

We're wrapping up an incredible week at the @Gartner_inc Security & Risk Management Summit, and we’re closing strong with something you won’t want to miss — the Mattermost Experience, our hands‑on, interactive demo built for high‑stakes, mission‑critical teams.

Stop by Booth 303 on the final day to dive into how secure, self‑hosted collaboration actually feels when it’s purpose‑built for operational resilience, AI governance, and real‑time coordination.

It’s fast. It’s interactive. And it’s the best way to see why organizations with the highest security requirements rely on Mattermost.

Swing by Booth 303 before the summit wraps, we’d love to show you what’s possible.

#GartnerSecurity #SRMSummit #Mattermost #CyberSecurity #SecureCollaboration #AIGovernance #MissionCritical #OpenSource

[Mattermost @Mattermost]

Today we're highlighting Daniel Schalla, our Head of Security, shares how AI transformation is reshaping his work: faster idea‑to‑execution, fewer repetitive tasks, and a sharper focus on strategy and resilience.

He sees AI’s biggest advantage in decision velocity, helping teams act faster without sacrificing control. In mission‑critical environments, AI amplifies human judgment rather than replacing it, and the real shift is moving from “using tools” to designing AI‑enabled systems with sovereignty and governance built in.

We hope you enjoy.

#AITransformation #MissionCritical #SovereignAI #SecureCollaboration

[Mattermost @Mattermost]

How does AI impact collaboration and risk in even the biggest companies? D. Keith Casey™️, our Sr. Product Manager, answers this question live at the Gartner Security and Risk Management Summit.

Watch the video and then come meet Keith in the booth today.

#Mattermost #GartnerSecurity #SRMSummit #SecureCollaboration #MissionCritical #CyberSecurity #AI #AISecurity

[Mattermost @Mattermost]

Happening today at TechNet Cyber — don’t miss Bill Anderson, our Principal Product Manager, as he tackles one of the biggest blind spots in modern cyber operations:

The collaboration layer is now the AI risk no one is governing.

As AI accelerates decision‑making and mission workflows, the real exposure is showing up in the everyday conversations, handoffs, and cross‑team coordination that adversaries increasingly target. Bill breaks down why collaboration platforms have become a critical attack surface — and what leaders can do to secure and govern them.

If you’re onsite, make time for this session and stop by the Mattermost booth to continue the conversation with our team.

#TechNetCyber #AFCEA #SecureCollaboration #AIGovernance #MissionCritical #Cybersecurity #DefenseTech #OpenSource #DigitalModernization

[Mattermost @Mattermost]

We’re filming live at the Gartner Security & Risk Management Summit, and Victor Hernandez, our Senior Solution Architect just tackled a critical question for every security and operations leader:

“What’s the one thing your team can’t afford to get wrong when collaboration becomes part of your control plane?”

Victor is onsite throughout the Summit, so if you’re attending, stop by Booth 303 to continue the conversation, ask questions, or dive deeper into how secure, self‑hostable collaboration strengthens your control plane.

Watch the video and come meet Victor at the booth tomorrow.

#GartnerSecurity #SRMSummit #SecureCollaboration #MissionCritical #CyberSecurity #ControlPlane

[Mattermost @Mattermost]

We're live at the @Gartner Security & Risk Management Summit, and today our team is taking the stage with a message security leaders can’t afford to miss.

🎤 Today’s Session:
Taking Command of AI in Security Operations: Designing for Sovereignty, Resilience, and Control

with Principal Product Manager Bill Anderson and CMO @LeighDow

AI is accelerating every layer of security operations — but too many architectures still sacrifice control for speed. In high‑stakes environments, that tradeoff fails. Today’s session breaks down how to build AI‑enabled security operations that deliver both

https://t.co/hl0zYrDh0g

#GartnerSecurity #SovereignAI #DataSovereignty

[Mattermost @Mattermost]

We're on the ground right now at the @Gartner_inc Security & Risk Management Summit, and our team is running rapid‑fire Flash Talks throughout the event. These 15‑minute expert sessions are built for security and operations leaders who want sharp, actionable insights without committing to a full session block.

Swing by Booth 303 to catch a talk, meet our experts, and see how secure, self‑hostable collaboration strengthens mission‑critical operations.

Why Stop By?
- Hear directly from Mattermost experts
- Get practical takeaways you can apply immediately
- Explore secure collaboration built for regulated, mission‑critical environments
- Connect with peers tackling the same challenges

If you’re at the Summit, come see us — the next Flash Talk starts soon.

#GartnerSecurity #SRMSummit #Mattermost #CyberSecurity #SecureCollaboration #AIGovernance #RiskManagement #MissionCritical

[Mattermost @Mattermost]

AFCEA International has named Jason Blais, our VP of Product and NATO Alliances, to its Board of Directors, strengthening the connection between global defense communities and the secure‑collaboration technologies shaping mission success.

Jason brings deep, firsthand insight from Europe’s defense and @NATO landscape, leading Mattermost’s product strategy from Helsinki and working closely with allied nations on sovereign collaboration, secure AI, and Zero Trust initiatives across mission‑critical environments.

https://t.co/4u0g8OJD2W

#AFCEA #DefenseTech #Cybersecurity #NATO #MissionCritical #SovereignCollaboration

[Mattermost @Mattermost]

TechNet Cyber: Day 1 — We’re Live at Booth 3218

If secure, flexible collaboration is core to your mission, come meet our team today at Booth 3218. We’re showcasing how defense, government, and critical‑infrastructure teams coordinate in air‑gapped, hybrid, and D3 (disconnected, denied, degraded) environments with full data control.

Two powerful sessions anchor our presence today:

Bill Anderson — The Collaboration Layer Is the AI Risk No One Is Managing
📅 June 3
⏰ 10:45 AM – 11:45 AM

David Herbst — Zero Trust at the Tactical Edge
📅 June 3
⏰ 10:50 AM – 11:10 AM

#TechNetCyber #AFCEA #CyberDefense #MissionCritical #SecureCollaboration

[Mattermost @Mattermost]

The Gartner Security & Risk Management Summit is underway, and the conversations shaping the future of secure, governed collaboration are already in motion.

As AI‑driven operations, distributed teams, and tightening regulatory timelines redefine what “secure” really means, organizations are rethinking how mission‑critical communication and decision‑making actually run. That’s the space Mattermost is here to support — where sovereignty, resilience, and control have to extend all the way to the collaboration layer.

If you’re at SRM today, come connect with us and join the discussions happening across the show floor.

#GartnerSecurity #GartnerSRM #CyberResilience #SecureCollaboration #DataSovereignty #SecurityOperations

[Mattermost @Mattermost]

If you’re attending the @Gartner_inc Security & Risk Management Summit, make sure Booth 303 is on your route tomorrow. Mattermost experts will be delivering fast, high‑impact Flash Talks — 15‑minute sessions packed with practical insights for security, risk, and operations leaders.

These talks are designed for busy Summit attendees who want sharp, actionable takeaways without blocking an hour on their calendar. Stop by, learn something new, and connect with the team behind secure, self‑hostable collaboration trusted in mission‑critical environments.

If you’re onsite tomorrow, swing by Booth 303 — your next 15‑minute learning burst is waiting.

#GartnerSecurity #SRMSummit #Mattermost #CyberSecurity #SecureCollaboration #RiskManagement #MissionCritical

[Mattermost @Mattermost]

David H., our Director of Solutions, Federal, is bringing a critical reality to the forefront: Zero Trust only works if it survives the edge.

David’s session at AFCEA International TechNet Cyber, “Zero Trust at the Tactical Edge: Enforcing Policy in Contested and Disconnected Battlespace,” digs into how DISA, the DoD, and industry can push identity, access control, and continuous authentication out to the edge while keeping C2 and JADO operational even when links are unstable or severed.

He’ll explore what it means to treat Zero Trust not as a centralized service, but as a distributed warfighting capability built for modern conflict.

If you’re at TechNet Cyber, come join the discussion shaping the next generation of secure, resilient operations.

#TechNetCyber #ZeroTrust #DDIL #TacticalEdge #MissionCritical #DefenseTech #JADC2 #C2 #CyberDefense #NationalSecurity

[Mattermost @Mattermost]

Mattermost and archTIS are pleased to announce a collaboration to deliver policy-enforced, data-centric security to secure operational collaboration for Defence Ministries, NATO Allies, and coalition partners worldwide.

The collaboration combines Mattermost’s secure, mission-critical command-and-control surface with archTIS Trusted Data Integration platform, to enable secure collaboration using dynamic policy orchestration via Attribute-Based Access Control (ABAC).

Mattermost and archTIS will be showcasing this capability together across upcoming defence events, including @AFCEA TechNet Cyber in Baltimore from 2-4 June, AFCEA TechNet International in Belgium from 9-10 June, and Eurosatory in Paris from 15-19 June.

https://t.co/eENkwNZKCL

#archTIS #Defence #NationalSecurity #DataCentricSecurity #SecureCollaboration

[Mattermost @Mattermost]

After a big day at Gartner SRM, it’s fiesta time 💃🌮

Join us for Sip, Salsa, Sovereignty — the unofficial after‑hours highlight of the Summit.
📍 Rosa Mexicano
📅 June 2
⏰ 7 PM

Drinks, bites, music, and great company. RSVP to join the celebration!

👉 RSVP https://t.co/mRa9rRU12z

#GartnerSecurity #SRMSummit #CyberCommunity #SecureOps #TechNetworking #EveningEvent

[Mattermost @Mattermost]

Mattermost and Second Front are hosting an easygoing after‑hours meetup just steps from the conference. Swing by for good food, an open bar, and conversations with people who actually get the national security and defense tech world.

If you want a break from the expo floor and a chance to connect with smart folks across the community, this is it.

📍 The Water Street Tavern & Key West Patio Bar
102 Water St, Baltimore, MD 21202
📅 June 3
⏰ 7:00 PM – 9:00 PM

RSVP today! https://t.co/C3ncRfTWRW

#TechNetCyber #AFCEA #Mattermost #SecondFront #DefenseTech #NatSec #Cybersecurity #Community #Networking #MissionCritical

[Mattermost @Mattermost]

Digital sovereignty has climbed the stack for a decade, but Leigh Marshall Dow’s new piece shows the next frontier isn’t cloud or AI, it’s the collaboration platform. The place where incidents are coordinated, decisions are made, and AI‑assisted workflows run is now part of the sovereign control plane. Most strategies still stop at infrastructure, leaving a gap in the very layer where operational coordination actually happens.

As AI accelerates and regulated environments tighten, the real question becomes: who governs the environment where consequential decisions are made?

https://t.co/RHCawJPwrS

#SovereignCollaboration #CyberResilience #AIReady #Mattermost #DigitalSovereignty #SRM2026