USB Protection & Removable Media Control
Regulatory Context: This module aligns with IACS UR E26 (Section 5.3) and E27 regarding the control of physical access points and the prevention of unauthorized software installation via removable media.
In the maritime environment, USB ports are the “digital gangway” of the vessel. While essential for software updates, log extraction, and chart loading, they represent the most significant physical threat to OT integrity—especially on legacy systems where OS-level protection is outdated or non-existent.
The Challenge: Why “Just Disable It” Isn’t Enough
The Maintenance Dependency
OEM technicians frequently require USB access for PLC logic backups and firmware patches. Total port deactivation can lead to maintenance delays.
Legacy Human-Machine Interfaces (HMI)
Older HMIs (e.g., Windows XP/7 based) often lack the ability to run modern Endpoint Detection (EDR), leaving them defenseless against “Auto-run” malware.
The Solution: A Three-Tiered Defense Strategy
To comply with E26/E27, we move beyond policy and implement technical barriers that prevent accidental or malicious “USB Drops.”
| Control Level | Method | Target Assets |
|---|---|---|
| L1: Physical | USB Port Blockers (Physical Keys) | Public area workstations, Bridge HMIs |
| L2: Administrative | “Cyber Kiosk” Scanning Station | All incoming OEM/Crew media |
| L3: Technical | GPO / Registry Port Disabling | Server Racks, AMS Main Cabinets |
Next Security Phase
RJ45 Port Security & Cabinet Hardening
Network Port Security & RJ45 Hardening Requirement: This module addresses IACS UR E26 (Section 5), mandate for protecting network infrastructure from unauthorized physical access and the "tamper-evident" requirements for OT cabinets. While digita...