An Examination of Overseas Adversary Threats to Subsea Cable Infrastructure


Governments all over the world are asking essential questions on nationwide safety and submarine cables, looking for to guard this essential infrastructure and mitigate threat.

Within the minds of many, threats from dangerous actors are a prime concern, although the overwhelming majority of cable faults are attributable to accidents from fishing and anchor drags.

Stronge Written Congressional Testimony cover

On November 20, 2025, members of the U.S. Home Committee on Homeland Safety convened a listening to to debate international adversary threats to subsea cable infrastructure. TeleGeography’s Chief Analysis Officer Tim Stronge testified at this joint listening to for the Subcommittee on Transportation and Maritime Safety and the Subcommittee on Cybersecurity and Infrastructure Safety.

Watch Tim’s congressional testimony beneath and learn the report he submitted to Congress

 

 

Opening Assertion of Tim Stronge, Chief Analysis Officer, TeleGeography

Chairmen, Rating Members, and distinguished members of the committee. Thanks for the chance to talk with you right now.

My title is Tim Stronge, and I’m the Chief Analysis Officer at TeleGeography. We offer the impartial knowledge that the worldwide communications business depends on to map and measure the web.

I’m right here right now to speak in regards to the bodily spine of the fashionable U.S. economic system: submarine fiber-optic cables.  The strategic significance of this community boils down to 3 traits: these cables are weak, they’re essential, and they’re irreplaceable.

First, vulnerability.  I’ve introduced a cable pattern with me. Encased inside are skinny strands of glass, every in regards to the width of a human hair.

If this appears to be like fragile to you, that’s as a result of it’s. Particular person cables are particularly weak to wreck from fishing gear and anchor drags. The worldwide community experiences roughly 200 faults yearly—a median of 4 per week.

Second, criticality. My son Kaz is away at school in Connecticut.  One among our favourite methods to remain linked is to share humorous movies. Fiber-optic networks make that doable. Maybe you already lay awake at night time, worrying about how we should defend our nation’s strategic reserve of cat movies. However even when not, it’s vital to know that cables carry way over social media and internet content material.

They’re the spine of worldwide finance. Greater than $12 trillion in monetary transactions move over these cables every day. Hundreds of thousands of American jobs now rely upon entry to digital infrastructure. The U.S. authorities, itself, is closely reliant on business submarine cables.

Third, irreplaceability. A typical false impression is that satellites are a viable one-for-one alternative. They don’t seem to be. Satellites are a significant emergency backup for mission-essential use, however they can’t substitute the sheer capability and cost-efficiency of fiber. Cables carry over 99% of all intercontinental knowledge for a easy cause: the cost-per-unit of cable capability is 2,800 instances cheaper than satellites.

Collectively, these three situations—bodily vulnerability, excessive criticality and irreplaceability—would possibly look like a scary combine.

However I’m right here right now with excellent news. For a cable operator, the lack of income streams throughout downtime is financially catastrophic. That signifies that these personal firms are already powerfully self-incentivized to safe their cables. 

Let’s return to that vulnerability. The overwhelming majority of these 200 annual faults are accidents. This fixed menace has compelled the personal sector to speculate billions of {dollars} in a tangible, layered protection.

Firms have constructed dozens of recent cables and geographically numerous touchdown stations to make sure knowledge at all times has a backup path. Cable operators are innovating with new detection expertise that makes use of the fiber itself to sense threats. And so they have funded a worldwide fleet of two dozen restore vessels on 24/7 standby.

Crucially, the methods constructed to defend towards routine accidents will even assist to safe the community towards malicious assaults.

Nevertheless, there are essential gaps the place authorities motion is required:

  1. First, designate a single level of contact for cables. We want one federal lead with a twin mandate: to shepherd new cable tasks via the allowing maze, and to construct a coherent nationwide technique for resilience.
  2. Second, strengthen deterrence. Present penalties for harm to cables date again to an 1884 treaty on telegraph cables and are woefully—nearly comically—inadequate.
  3. Third, assist fast-track cable restore overseas. The worldwide common delay to start a restore is now a month and a half. A lot of that is because of advanced allowing in international waters. We want a diplomatic push to chop the international pink tape holding restore ships in port.

The business has already demonstrated its deep dedication to cable safety. It appears to be like to authorities as a companion to assist clear the trail.

Thanks, and I stay up for your questions.