Mattermost carries chat data, files, and operational incident communication. Harden auth, plugin lifecycle, and integration endpoints before production rollout.
¶ 1) Enforce strong authentication and SSO policy
- Enable MFA for privileged users and workspace admins.
- Use SAML/OIDC for centralized account lifecycle and session policy.
- Disable account creation methods not required by your identity policy.
- Rotate bot and personal access tokens on a fixed schedule.
¶ 2) Harden transport and external integrations
- Set the site URL to HTTPS only and enforce HSTS at reverse proxy.
- Restrict outbound webhook destinations where possible.
- Require TLS validation for LDAP/IdP/email integrations.
- Keep public file URLs and link previews aligned with security policy.
¶ 3) Reduce plugin and operational attack surface
- Install only reviewed plugins from trusted maintainers.
- Remove unused plugins and disable developer mode in production.
- Keep app and plugins on a regular patch cadence.
- Restrict system console access to a small admin group.
- Mattermost security hardening and deployment docs: https://docs.mattermost.com/administration-guide/security.html
- Mattermost source repository: https://github.com/mattermost/mattermost
- Mattermost security updates: https://mattermost.com/security-updates/
Any questions?
Feel free to contact us. Find all contact information on our contact page.