Zero Trust Policies

    Create least-privilege access and segmentation policies using identity, posture, and context—then roll out safely with staged enforcement.

    Policies
    Enforcement
    Least Privilege
    OT/ICS
    9 min
    Last updated: 2026-01-22

    Overview

    QuantLayer policies answer who can access what, from where, under which conditions—and what happens when trust changes.

    Policy model

    • Subject (identity) + Resource + Action + Context.
    • Decision: allow, deny, step-up, isolate, quarantine.
    • Evidence: decision trace and outcome verification.

    Enforcement modes

    Observe

    Monitor matches without blocking to validate impact.

    Stage

    Pilot enforcement to a subset with approvals and rollback.

    Enforce

    Apply controls and capture immutable evidence.

    Break-glass

    Emergency access with time limits and strict logging.

    OT-safe rollout

    Recommended OT sequence
    Observe → baseline → define zones/conduits → stage enforcement → enforce during maintenance windows.

    Policy patterns

    • Integrity-gated remote admin.
    • Step-up verification for privileged actions.
    • Zone isolation when anomalies appear.
    • Time-windowed patch operations.