20. Zero Trust Environment Bypass

20.1 Zero Trust Architecture (ZTA) Bypass

ZTNA Gateway Bypass: - Steal the authenticated device certificate → device impersonation - Session token theft / replay - Use trusted SaaS applications as a jump host - DNS tunneling to bypass traffic policy

Identity-Based Attacks: - Credential theft → identity impersonation (legitimate identity / illegitimate behavior) - OAuth abuse → excessive application permissions - Conditional Access policy bypass (migrating a session from a compliant device to a non-compliant device)

20.2 XDR/MDR Bypass

XDR Detection Evasion: - Living off the Land toolchain (entirely using built-in system tools) - Fileless attacks (pure in-memory execution) - Segmented and delayed operations (reduce behavioral correlation) - Use legitimate remote administration tools (TeamViewer/AnyDesk/ScreenConnect) - Anti-telemetry: Patch ETW / WMI event consumer hiding

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