Coast Guard Issues New OT Cybersecurity Rules for Maritime Industry, Mandating Third‑Party Audits
What Happened — The U.S. Coast Guard released updated cybersecurity regulations under the Maritime Transportation Security Act (MTSA). The rules require owners and operators of maritime vessels and facilities to develop formal OT‑security plans, conduct regular independent third‑party audits, and assign a hybrid OT‑security role that bridges operations and cyber teams.
Why It Matters for TPRM —
- Third‑party audit mandates create new contractual obligations for vendors supplying OT equipment or services.
- The hybrid OT‑security role expands the attack surface, requiring additional vetting of personnel and processes.
- Non‑compliance can trigger enforcement actions, fines, and loss of operating licenses, impacting supply‑chain continuity.
Who Is Affected — Maritime transportation companies, port operators, shipbuilders, OT‑hardware vendors, and managed service providers supporting vessel control systems.
Recommended Actions — Review all maritime‑related contracts for MTSA compliance clauses, verify that vendors have independent audit certifications, and ensure your organization has a documented OT‑security governance model that aligns with the hybrid role requirement.
Technical Notes — The rules do not reference specific CVEs but focus on governance, risk assessments, and continuous monitoring of OT environments. Compliance is measured through documented security plans, audit reports, and evidence of a dedicated OT‑security function. Source: Dark Reading