Submarine Cables

Oct 2, 2025

Protecting Internet Infrastructure with Submarine Cable Sensing

The millions of kilometers of fiber optic cable lying on the ocean floor have traditionally been invisible assets—laid once and forgotten until something breaks. But Distributed Acoustic Sensing (DAS) technology is transforming this dark infrastructure into a vast network of intelligent sensors capable of detecting everything from anchor drags to earthquakes.

Sep 18, 2025

Current State and Forecasts for Submarine Cable Maintenance

While new submarine cable systems are being built to expand global internet capacity, the maintenance of submarine cables has not seen the investment required to maintain these systems.

Sep 11, 2025

Cybersecurity Challenges in Submarine Cable Systems

Submarine cables carry over 99% of international data traffic and face unprecedented cybersecurity challenges that extend far beyond traditional network security.

In this episode of the TeleGeography Explains the Internet podcast, Ferris Adi, Chief Information Security Officer at Trans Americas Fiber System, recently shared insights on the evolving threat landscape and strategic approaches to protecting these vital assets.

Sep 4, 2025

The Economics of Submarine Cables

In this episode of the TeleGeography Explains the Internet podcast, senior analyst Lane Burdette takes listeners on a deep dive into the complex world of submarine cable economics.

Jul 24, 2025

You've Read About Submarine Cable Breaks. Now Read About the Repairs.

There is no shortage of headlines about high-profile cable breaks, particularly around the Baltic Sea and Taiwan. But it's worth remembering that where there have been faults, there have also been repairs.

Jul 18, 2025

The Regulatory and Geopolitical Environment of Cable Faults and Maintenance

Undersea cables are crucial to the global economy and national security.

It's no surprise, then, that governments and regional industry groups are considering how to enhance submarine cable security and resilience.

Jun 30, 2025

It’s Going to Take $3 Billion to Ensure Submarine Cable Repair Ships Can Keep the World Connected

A new report details what is needed to sustain current service levels and reduce repair delays for the undersea cables that carry global internet traffic.

Jun 5, 2025

An FCC Commissioner Explains Spectrum Allocation + Broadband Expansion

In this episode of the TeleGeography Explains the Internet podcast, FCC Commissioner Nathan Simington joins the show for a deep dive into the evolving world of spectrum allocation, broadband infrastructure, submarine cable policy, and cybersecurity. With a unique background in finance, law, and policy, Simington offers an interesting perspective on the complexities of the current telecom environment and where federal policy is headed.

May 27, 2025

The Key Trends Shaping Long-Haul Capacity Demand

What's shaping the trajectory of the global bandwidth market? To answer that question, we identified four significant trends worth watching within our recently updated Transport Networks Research Service.

To understand the future of long-haul capacity demand and pricing, bookmark these industry headlines. 

May 15, 2025

Building Tomorrow’s Internet: A 2025 Update on Cable Investment

A steady stream of investment has driven tremendous growth in subsea cable infrastructure to keep pace with ever-increasing bandwidth demand.

According to new data from TeleGeography’s Transport Networks Research Service, the aggregate cost of new construction over the past nine years has averaged over $2 billion annually.

Let's review the state of submarine cable investment in 2025.