A small USB can cross a large boundary
A removable drive can move files between networks that are otherwise separate. Its origin and handling matter.
In 30 seconds
- Use media and update packages approved for the particular system.
- Follow the designated checking and transfer process; a clean malware scan is useful evidence, not a guarantee.
- Do not investigate an unknown USB by plugging it into a working shipboard computer.
Make it concrete
A supplier brings a chart update on a personal drive. Verify the approved source and transfer route with the responsible officer before use.
- 01Verify source
- 02Check / approve
- 03Transfer
Check your understanding
Can removable media bypass a network separation boundary?
- Use media and update packages approved for the particular system.
- Follow the designated checking and transfer process; a clean malware scan is useful evidence, not a guarantee.
- Do not investigate an unknown USB by plugging it into a working shipboard computer.
Go to the source
- Course notes · ThS. Nguyễn Duy Hiếu · An ninh mạng trên tàu biển cho thuyền viên ↗
- NIST SP 800-82 Rev.3 · Guide to Operational Technology Security ↗
Sources reviewed: 13.09.2026