the differentiator

A policy is trusted only once it survives traffic it never saw.

Every incumbent learns least privilege from observed traffic. It scores perfectly on the window it watched, and silently blocks the failover. This is the part of Themis that exists because that is not good enough.

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0100 the held-out test

Your own engineers write the exam.

Your ops list the flows that must keep working — the quarterly failover, the batch window, the break-glass path — and seal the list. We never see it. The policy is scored against it before it goes anywhere near enforcement.

The separation is mechanical, not procedural.— the drafting stage has no code path to the held-back set. Checkable, not promised.
Observed traffic is evidence, never authority.— nothing becomes allowed by having happened. Only a declared change may widen.
Not observed never means no traffic.— telemetry is sampled, and the ledger says so.
A denied probe is a security event.— never a candidate rule.
Every gate is shown going red before you trust it.— on a seeded defect. A gate that has never failed in front of you is decoration.

0200 classify & own

A verdict without an owner is a finding nobody acts on.

A class

Tier boundary, batch dependency, third-party egress, break-glass path. What makes a policy readable by someone who did not write it.

A story

The declaration that covers it, the change that introduced it, the date first seen. A rule with a reason can be retired on evidence.

An owner and an approver

A named team, and the person whose name sits in the event log next to approve. An unowned flow cannot be widened — it escalates.

The next person inherits the reason, not just the rule.

0300 limits

What this does not do.

Segmentation reduces blast radius. It does not erase it.— on an allowed path, a compromised workload is still a compromised workload.
An address you can read is one anyone can spoof.— identity stays cryptographic.
IAM keeps the cloud API plane.— we retire its network-shaped hacks, not IAM.
Current figures are lab figures.— yours come from your estate, in the first two read-only weeks.

e000 End.DT6 deliver

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Read-only, fixed scope. We compare your declared intent to what is actually running, and hand back the gap list.

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