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Cloud Access Security Broker

Discover your shadow IT and govern the use of cloud applications. Deep visibility and easy policy enforcement, managed 24/7 by Level-3 engineers.

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Overview

Regain control of the cloud.

As organizations adopt cloud applications to drive collaboration and productivity, a significant portion of those applications are not managed by IT teams. This shadow IT is a critical challenge for security and compliance: departments adopt cloud apps without compliance checks, and IT loses visibility into where sensitive data is uploaded or shared.

The Open Systems Cloud Access Security Broker (CASB) addresses this head-on. By providing deep visibility into cloud application usage and making it easy to enforce security policies, CASB helps organizations regain control over their cloud environments.

Open Systems CASB providing visibility and policy control over sanctioned and shadow cloud applications

CASB services enable cloud security

Benefits.

Analyze your cloud application risk

Discover which cloud apps your users access and score your exposure across thousands of applications.

Create and enforce policies

Block non-compliant apps and restrict risky operations with a few clicks, balancing security and access.

Monitor and report

Identify newly emerged, unsanctioned apps and report on progress for compliance and governance.

Leverage our security experts

Level-3 engineers take on the load of integration and operations, 24/7. No L1, no L2.

How Open Systems CASB works

Support across three phases.

Analyze your cloud application risk

Discover what cloud applications your users access and what operations they perform
Assess your posture with risk scores for over 9,000 cloud applications
Strategize on the policies that reduce your overall risk most effectively
Access everything centrally in your Mission Control portal

CASB cloud application risk analysis dashboard

Create and enforce policies

Block non-compliant applications and restrict operations based on risk assessments
Maintain an exclusion list for safe domains and URLs
Measure enforcement with real-time visibility into usage and data flows
Encourage responsible usage with customizable block messages

CASB policy creation and enforcement dashboard

Monitor and report

Identify and manage newly emerged, unsanctioned cloud applications
Report on progress and support compliance and IT governance
Centralize control over cloud applications to increase IT efficiency
Log detailed activity records for forensic investigations

What is different about Open Systems CASB

Differentiators.

Quick deployment

Rapid activation without complex reconfiguration, especially for existing Secure Web Gateway customers.

AI-driven categorization

AI plus human review for accurate application categorization and compliant policies.

Seamless integration

Integrates smoothly with existing SASE components for a unified approach to cloud app usage.

Single pane of glass

One portal for discovery, policy, monitoring and reporting across all cloud applications.

High availability

Consistent access and protection, backed by 24/7 monitoring and managed support.

One platform

Part of the SSE layer.

CASB works alongside ZTNA, Secure Web Gateway, Firewall and Email Security in one managed SSE layer, on 35 years of operational baseline. CASB activates quickly for existing SWG customers.

FAQ

Questions about CASB.

How do you find applications nobody told IT about?

By looking at the traffic rather than at a list. Discovery shows which cloud applications your users actually reach and what they do there, scored against risk profiles for more than 9,000 applications. That is why the first report is usually uncomfortable: the shadow IT nobody declared is exactly the part a survey cannot find.

We already run your Secure Web Gateway. What does CASB add?

The gateway decides whether a site may be reached; CASB tells you what that site is, how risky it is and which operations inside it should be allowed. For an existing Secure Web Gateway customer it is an activation rather than a deployment, with no complex reconfiguration, which is why most customers add it in minutes.

Does this mean blocking everything the business likes to use?

No, and a CASB that is used that way gets switched off within a quarter. Policy can restrict a risky operation, for example uploads to an unsanctioned file service, while leaving the application usable. An exclusion list keeps safe domains and URLs out of the way. The goal is governance, not a wall.

How are the risk scores decided, and can we trust them?

Categorization combines AI with human review, which matters because an automated classifier alone mislabels the long tail of niche business tools and a manual process alone cannot keep up with thousands of applications. You can see the reasoning per application in the portal rather than taking a number on faith.

Will users understand why something was blocked?

If you want them to, yes. Block messages are customizable, so a user sees why an application was refused and what to use instead. That single detail is what turns a CASB rollout from a helpdesk wave into a nudge toward the sanctioned tool.

What do we get for compliance and audits?

Reporting on progress over time, alerting on newly emerged unsanctioned applications, and detailed activity logs for forensic investigation. In practice the useful part in an audit is not the block list but being able to show that shadow IT is measured, trending down and governed.