Where AI Agent Security Gets Enforced - A Comparison of Four Vendor Approaches

AI agent security became one of the most active product markets of 2026, with Zscaler, Idira (Palo Alto Networks), SailPoint, and BeyondTrust all launching distinct approaches. While these vendors agree on the core risks—excessive privilege, machine-speed action, and visibility gaps—they enforce controls at different points in an agent's action lifecycle: governance time, connection time, or action time. This paper argues that action-time endpoint enforcement offers the most direct control, especially for local operations that leave no entitlement or network trace.

Explore the full comparison to understand each vendor's strengths and coverage boundaries, and determine the right control layers for your organization's AI agent strategy.