What are the three deployment modes for enterprise CASB solutions?

CASB deployment modes: (1) Forward proxy — intercepts outbound user traffic to cloud apps in real time; (2) Reverse proxy — intercepts cloud app traffic using identity provider integration without endpoint agent; (3) API mode — connects to SaaS APIs to scan data at rest, user activity, and sharing permissions. Comprehensive deployments use all three modes for different use cases.

How does CASB enable shadow IT discovery and risk management?

CASB analyzes proxy logs, firewall logs, or DNS traffic to discover all cloud services accessed by employees, mapping them to a cloud app catalog with risk scoring (SOC 2 certification, data residency, breach history, sharing controls). This shadow IT inventory enables security teams to sanction approved apps, block high-risk apps, and steer users to enterprise-approved alternatives.

How do enterprises implement DLP policies through CASB for regulatory compliance?

CASB DLP for compliance includes: real-time blocking of regulated data (PII, PHI, PCI data) upload to unsanctioned cloud storage, quarantining of sensitive files shared publicly in SharePoint or Box, encryption of regulated data before upload to cloud apps, activity monitoring for excessive data downloads (potential exfiltration indicators), and compliance reports for GDPR, HIPAA, and PCI-DSS audit requirements.

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Best Solutions for CASB

Expert review of the best Cloud Access Security Broker solutions, including Netskope, Microsoft Defender for Cloud Apps, Zscaler CASB, and Palo Alto Prisma SaaS.

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Netskope is the leader in data-centric CASB, providing inline CASB for real-time inspection of cloud traffic, API-based CASB for data at rest in SaaS applications (Microsoft 365, Salesforce, Box), advanced DLP with 3,000+ data identifiers, and the industry's largest cloud app catalog (70,000+ apps). Microsoft Defender for Cloud Apps integrates deeply with Microsoft 365 and Azure environments.

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Tags:CASBcloud access security brokerNetskopeMicrosoft Defender for Cloud AppsZscaler CASBPrisma SaaS