Implementation Checklist (Altaba/Yahoo (SEC 2018))

A practical rollout plan with measurable proof for disclosure-control reliability and incident-governance execution.

0–30 days (stabilize + baseline)

• Inventory incident-escalation and disclosure-support systems
• Baseline disclosure-control workflow requirements and approvals
• Centralize security-to-disclosure telemetry and retention controls

Deliverables - Disclosure-control baseline and ownership matrix - Material escalation/change SOP with sign-off paths - Telemetry coverage report for escalation and decision records

30–60 days (control effectiveness)

• Deploy drift checks for disclosure-control workflow configurations
• Perform least-privilege review for legal/finance/security disclosure roles
• Implement detections for delayed escalation and control exceptions

Deliverables - Drift and exception metrics dashboard - Access review package with remediation evidence - Detection rule catalog and validation notes

60–90 days (evidence readiness)

• Run 48-hour evidence-pack drill for SEC inquiry readiness
• Add independent control testing focused on disclosure governance
• Publish quarterly leadership report on disclosure-control effectiveness

Deliverables - Evidence-pack index with retrieval owners - Mock inquiry drill findings and corrective actions - Quarterly disclosure-governance reporting template

Ongoing metrics (prove it's real)

• % material incidents meeting escalation SLA
• Time to remediate disclosure-control exceptions
• Privileged access recertification completion %
• Coverage % for disclosure decision logs
• Age of open high-risk governance findings