Investigate security alerts with linked evidence

Proposed inputs

1. Name

   Invented alert packet

   Owner

   Security owner

   Minimum scope

   A fictional account event, a device event and an incident reference

   Quality check

   Use no real identities, secrets or live endpoints in the first exercise.

2. Name

   Analyst answer key

   Owner

   Qualified reviewer

   Minimum scope

   Known facts, one contradictory observation and one deliberately missing record

   Quality check

   Label the difference between observation, hypothesis and a decision.

Access and setup — proposed or unknown

Proposed minimum

1. Agree a narrow exercise and the owner who can resolve ambiguous facts.

2. Use locally supplied fictional records before requesting any live connection.

Compatibility unknowns

1. Unknown: actual platform access, integration behavior, configuration, costs and Canadian availability.

External actions requiring approval

1. Approve data access and each consequential change; keep a reversible review path.

Why use this

1. Expose uncertainty before operational changes.

2. Keep the decision reviewable.

Why an agent / simpler alternative

Useful judgment

Reconcile conflicting observations across approved records.

Simpler alternative

A fixed alert with complete, reliable fields may need only a deterministic rule and an analyst checklist.

Unsuitable when

The evidence cannot be accessed lawfully, the owner cannot bound collection, or a result would automatically isolate systems without review.

Expected deliverable and review checks

Proposed artifact

An evidence-linked case and reviewable detection-change proposal.

Critical checks

1. Every conclusion has a visible evidence reference.

2. Missing information remains unresolved.

3. The owner separately reviews any suggested change.

Missing output evidence

No individual investigation artifact inspected.

First check — proposed, unexecuted

Status

proposed_unexecuted

Synthetic fixture

A fictional account appears in two events. One comes from a different timezone, one shares only a display name, and a third expected event is absent. The answer key deliberately supports neither a confirmed attack nor an all-clear.

Acceptance checks

1. Keep timezone conversion explicit.

2. Do not join entities on a display name alone.

3. Produce an unresolved conclusion with the exact missing evidence.

4. Make no live queries or changes.

Stop conditions

1. Stop if a real identity, credential, external target, privileged action or live security decision is needed.

Failure signals and proposed responses

1. Signal

   A common account name appears on two different systems

   Why it matters

   The result may join unrelated people or devices.

   Proposed response

   Keep identities separate until an authoritative link is supplied.

2. Signal

   An absence of logs is treated as proof nothing happened

   Why it matters

   A collection gap can resemble normal activity.

   Proposed response

   Mark coverage unknown and request the smallest missing record.

3. Signal

   A suggested exception would hide similar future events

   Why it matters

   Reducing noise can also suppress important evidence.

   Proposed response

   Show the proposed before/after behavior to the owner and retain the prior version.

Effort and cost — unknown

Setup work

1. Assign an accountable reviewer, choose representative counterexamples and record what would count as a failure.

Ongoing review

1. Sample uncertain results and changes in the input format. Keep reviewer corrections so the same error can be checked again.

Unknowns

1. Unknown: licensing, configuration, usage charges, elapsed effort and reliability. No savings established.

Limits

1. The intended output describes what an authorized implementation would produce; the first exercise is offline and does not establish live compatibility or success.