Cloud Access Security Broker Tools 2026
A Cloud Access Security Broker sits between your users and the SaaS and cloud services they touch, giving security teams visibility and control they otherwise lose the moment data leaves the corporate network. It answers the question every CISO eventually asks: which cloud apps are people actually using, what sensitive data is sitting in them, and who can reach it. CASB tooling covers four jobs that matter to buyers: discovering shadow IT, enforcing data loss prevention across sanctioned and unsanctioned apps, applying access and configuration policy, and catching account takeover or risky behavior. The tools in this category increasingly ship as part of SSE and SASE platforms rather than as standalone products, so the real evaluation is less about the acronym and more about how well the inline and API enforcement holds up against your app inventory.
We cover 17 Cloud Access Security Broker tools, 0 free and 17 commercial.
Accuracy and depth improve over time. Last reviewed Sep 2026. Is something off? Reach out.
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New to this category? What is Cloud Access Security Broker (CASB)?
Cloud Access Security Broker for monitoring and securing cloud application usage
Unified SaaS & AI ecosystem security platform for enterprise data visibility.
Cloud-based web content filtering for K-12 schools supporting CIPA compliance.
Cloud security & student data protection platform for M365 in K-12.
K-12 cloud security & student safety monitoring for Google & M365.
Cloud proxy that inspects & enforces policy on cloud API traffic.
Client-side encryption for cloud/web apps with customer-held key mgmt.
AI-powered CASB with LLM-based DLP and SSPM for M365 & Google.
CASB solution for securing SaaS application access and usage
Cloud Access Security Broker (CASB) solution by Vilogics
CASB with gateway-based encryption and tokenization for SaaS applications
Cloud data encryption gateway for SaaS apps with field-level encryption
CASB for securing SaaS and IaaS with inline and out-of-band protection
CASB providing data protection & access control for cloud apps via multi-mode
AI-powered data protection and threat defense for cloud and generative AI
SASE-native CASB for SaaS app security, data protection, and threat prevention
How to choose Cloud Access Security Broker tools
- Map the tool's API connector depth against your actual SaaS inventory, since a shallow integration only reads metadata while a deep one inspects content and configuration.
- Test DLP detection against your own sensitive data and measure the false positive rate, because vendor demos rarely reflect how noisy your environment really is.
- Decide which deployment modes you need: API for data at rest, forward or reverse proxy for inline enforcement, and confirm the proxy modes do not break apps or add unacceptable latency.
- Check how shadow IT discovery ingests data, ideally pulling from existing firewall, proxy, and SWG logs rather than requiring a separate collection layer.
- Consider whether you want a standalone CASB or the CASB function inside an SSE or SASE platform, and weigh consolidation against best-of-breed depth.
- Look at threat detection quality for account takeover and anomalous behavior, including whether it integrates with your identity provider and feeds your SIEM cleanly.
Cloud Access Security Broker Tools FAQ
Common questions about Cloud Access Security Broker tools, selection guides, pricing, and comparisons.
A CASB is a security control point between users and cloud services that enforces policy on data and access. It does four things: discovers shadow IT, applies data loss prevention to sanctioned and unsanctioned apps, enforces access and configuration rules, and detects threats like account takeover. It gives security teams visibility into cloud usage that traditional network and endpoint tools miss.
These are deployment modes. Forward proxy routes traffic through an agent or PAC file for inline control, including on unmanaged apps. Reverse proxy redirects sanctioned app logins through the CASB without an agent, useful for BYOD. API mode connects to app APIs out of band to scan data at rest and surface misconfigurations after the fact. Most serious deployments use API plus at least one inline mode.
Start with your real app inventory and confirm the CASB has deep API connectors for the SaaS you actually run, not just a logo list. Test DLP accuracy against your own sensitive data, check whether inline modes break apps or add latency, and verify shadow IT discovery pulls from your existing firewall and proxy logs. Then weigh whether a standalone CASB or one folded into an SSE platform fits your roadmap.
No, but they overlap heavily now. CASB is one component, alongside Secure Web Gateway, Zero Trust Network Access, and often DLP, that vendors bundle into Security Service Edge (SSE). SASE adds networking like SD-WAN on top of SSE. Most CASB capability today ships inside these platforms, so buyers rarely purchase a pure standalone CASB and instead evaluate the CASB function within a broader suite.
Native app controls are inconsistent and live in separate admin consoles, which does not scale across dozens of apps. A CASB gives you one place to enforce DLP, access policy, and threat detection across your whole cloud footprint, plus visibility into unsanctioned apps the SaaS vendors cannot see. For SaaS posture specifically, some teams pair a CASB with a dedicated SSPM tool rather than relying on either alone.
