Cisco Umbrella (CASB)

Cisco Umbrella delivers CASB through DNS-based inspection, which makes it the simplest CASB deployment in the category by a significant margin: point DNS at Umbrella and every cloud application access is logged and controlled within minutes. The Talos threat intelligence applied to cloud application traffic and the deep integration with Cisco ISE, Meraki, and Duo create a unified security context for Cisco-infrastructure organisations that is operationally compelling.

The DNS-based approach has inherent depth limitations. Granular SaaS application data inspection for content-level DLP policy enforcement requires inline proxy inspection that DNS cannot provide. Cisco was dropped from the Gartner SSE Magic Quadrant Leaders in 2024, reflecting the gap between Umbrella's operational simplicity and the depth that enterprise CASB buyers increasingly require.

The verdict: Cisco Umbrella CASB is right for Cisco-infrastructure environments wanting the simplest possible CASB with Talos threat intelligence applied to cloud traffic. Organisations needing deep SaaS data inspection should evaluate Netskope or Zscaler.

Last reviewed: May 2026

Strongest: Shadow IT visibility

Watch out for: Compliance reporting

Best for

Cisco-infrastructure environments wanting integrated CASB and DNS security with minimal deployment complexity.

Not suitable for: Organisations needing deep CASB analytics — Umbrella DNS-based approach has less visibility than proxy-based solutions.