Abnormal Security Security Posture Management vs Zscaler Cloud Access Security Broker (CASB): Side-by-Side Comparison (2026)

Short answer

Mid-market and enterprise security teams drowning in Microsoft 365 misconfigurations will cut remediation time in half with Abnormal Security Security Posture Management, because it actually tells you how to fix things instead of just flagging them. The tool covers the full NIST ID and PR control families for access and asset management, and its AI-driven risk scoring surfaces the admin account drift and overly permissive app grants that matter most. Skip this if your environment is multi-cloud heavy; it's Microsoft 365-only, so hybrid shops will still need a separate CSPM for AWS or Azure IaaS. Mid-market and enterprise security teams drowning in SaaS sprawl need Zscaler Cloud Access Security Broker for its inline proxy architecture that catches threats in motion without forcing users through a VPN bottleneck. The platform covers both real-time API inspection and data at rest scanning across Microsoft 365, Salesforce, and AWS, hitting NIST PR.DS and DE.CM functions hard. Skip this if your organization runs primarily on-premises applications or lacks the cloud adoption density to justify a dedicated CASB; you'll overpay for capabilities you don't need.