Write effective control objectives

From broad goals to testable controls

“Keep the system sovereign” is not a control objective. It does not say what must happen, where it applies, who is responsible, or how success is tested.

A control objective should describe a required state or outcome without prematurely locking the organization to one product.

Control-objective pattern

Use this structure:

Within [scope and boundary], [responsible authority]
must [allow, prevent, approve, observe, retain, or recover]
[defined object or event], so that [risk or requirement]
is addressed. Effectiveness is verified by [test or evidence]
at [event or frequency].

Example:

Before an AI workload release enters the restricted runtime, the platform authority must verify and approve the identity, provenance, license record, malware scan, signature, and digest of required model and software artifacts. Promotion evidence is retained with the release manifest.

Control types

Combine control types rather than relying on one layer:

• Preventative: blocks an unapproved action or state.
• Detective: identifies a policy violation, change, failure, or suspicious behavior.
• Corrective: returns the system to an approved state.
• Recovery: restores service and control after loss or disruption.
• Directive: establishes required ownership, process, or behavior.

Automation improves consistency, but a manual control can be appropriate when frequency is low, judgment is required, and evidence is reliable.

Foundation control families

SAI-100 uses these families to avoid gaps:

1. Purpose and ownership: intended use, accountable owner, prohibited uses, lifecycle authority.
2. Data and knowledge: classification, access, lineage, retrieval permissions, retention, deletion, egress.
3. Models and prompts: provenance, licensing, evaluation, approval, versioning, configuration, retirement.
4. Artifacts and infrastructure: trusted sources, scanning, signing, builds, runtime, identity, networks, secrets.
5. Interactions and tools: input inspection, policy routing, output validation, allowlisted tools, human approval.
6. Operations and resilience: observability, release gates, incidents, capacity, backup, restore, continuity.
7. Evidence and assurance: audit events, decision records, integrity, retention, review, exceptions.

Test effectiveness

For every material objective, define:

• The control implementation and owner.
• A positive test showing approved behavior succeeds.
• A negative test showing prohibited behavior is blocked or escalated.
• The evidence created by both paths.
• The review frequency and trigger for reassessment.
• Known limitations and compensating controls.

Avoid common weaknesses

• Product-feature descriptions without a required outcome.
• Controls with no defined scope or owner.
• “Must be secure” or “must comply” statements that cannot be tested.
• Logging everything without defining useful evidence.
• Manual approval that can be bypassed by another deployment path.
• Controls copied from another system without validating the local boundary and threat.

Continue with Evidence by design to connect control operation to verifiable records.