Bitcoin Can Survive 72% of Submarine Cables Failing but apparently 5 Hosting Providers Could Cripple It

A new Cambridge study just answered the question nobody had rigorously tested: What would it actually take to break Bitcoin's network?

The answer is more complicated than Bitcoin maximalists want to admit—and more resilient than critics claim.

Researchers at the Cambridge Centre for Alternative Finance analyzed 11 years of Bitcoin network data against 68 verified submarine cable fault events. They ran 1,000 Monte Carlo simulations per scenario to test infrastructure resilience.

The findings:

Between 72% and 92% of the world's inter-country submarine cables would need to fail simultaneously before Bitcoin experiences significant node disconnection.

Random cable failures barely register. Over 87% of real-world cable faults caused less than 5% node impact.

But here's the catch:

A targeted attack on the top 5 hosting providers by node count, Hetzner, OVH, Comcast, Amazon, and Google Cloud, could cripple Bitcoin with just 5% routing capacity removal.

Does that validate Bitcoin's resilience narrative, or is this overconfident given the targeted attack vulnerability?

Read the full breakdown here: https://jalookout.com/2026/03/14/bitcoin-submarine-cables-resilience-hosting-provider-vulnerability/