Observed Signal · Sep 10, 2026 · Corporate Update · Source: Mattermost · Impact: 5/5
Zero Trust in Practice: Identity, Part 2 — Advanced Identity, from Static Roles to Dynamic Access
This blog post, published on September 10, 2026, is the second part of Mattermost's series on Zero Trust maturity for the Identity pillar. It explains the limitations of static role-based access control (RBAC) and introduces attribute-based access control (ABAC) as the Advanced maturity stage. Mattermost implements ABAC using Common Expression Language (CEL) syntax, with continuous evaluation of user, resource, and environmental attributes sourced from AD/LDAP, SAML assertions, or manual assignment. The post also highlights Program Masking and the importance of authoritative attribute sources for government and defense organizations.
This article details Mattermost's approach to advanced identity controls, which is critical for government and defense customers adopting Zero Trust. It highlights the shift from static RBAC to dynamic ABAC, a key maturity step that addresses access sprawl and continuous authorization.
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Key Takeaways & Evidence Grounding
- Published on September 10, 2026, by Justin Reynolds as part 2 of a series on Zero Trust maturity for the Identity pillar.
- Mattermost's Advanced Access Controls use Common Expression Language (CEL) syntax to define access policies.
- ABAC evaluates user, resource, and environmental attributes continuously, not just at provisioning time.
- Attributes can be sourced from AD/LDAP sync, SAML assertions, or manual admin assignment.
- Program Masking hides program names from administrators unless they already have access, keeping access controls with the program's security officer.
Connected Companies & Entities
“Mattermost is the company publishing the blog post and the provider of the Advanced Access Controls and Program Masking features described.”
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
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