THE SUBSEA NERVE
The undersea cables that carry the world's data — and the vulnerability nobody owns.
Summary
Almost all intercontinental internet traffic crosses a few hundred fragile fiber-optic cables on the seabed. This File documents who lays them, who can sever them, and why the map of cables is a map of power.
The system is privately built, lightly regulated, and physically exposed — a critical dependency hiding in plain sight.
Timeline
- 1988
First transatlantic fiber
TAT-8 begins the fiber era, eventually carrying the overwhelming majority of transoceanic data.
- 2023
Cable incidents
A series of cable faults near chokepoints raises the salience of deliberate interference.
Key Actors
Builders and owners of subsea routes
De facto guarantors of cable security
Related Files
Signals
Another subsea cable fault near a known chokepoint was logged this week; the pattern noted in FILE #005 continues without a clear custodian for repair.
Open Questions
- ?Who is responsible for repair and deterrence when a cable is cut in international waters?
Sources
- The Undersea Network · Duke University Press · 2015
