Bitcoin’s Resilience to Infrastructure Attacks: A New Study Reveals Surprising Strength, But Targeted Threats Remain

A new study from the Cambridge Centre for Alternative Finance reveals Bitcoin’s surprising resilience to widespread infrastructure disruptions, specifically failures in submarine internet cables. The research, spanning 11 years of network data (2014-2025) and 68 verified cable fault events, indicates that Bitcoin can withstand significant damage to global internet infrastructure, but isn’t invulnerable to targeted attacks.

Bitcoin Can Withstand Widespread Cable Failures

The study found that between 72% and 92% of the world’s inter-country submarine cables could fail before Bitcoin’s network experiences significant disconnection of nodes CoinDesk. This suggests a high degree of robustness built into the Bitcoin network’s decentralized architecture. These cables carry approximately 99% of international internet traffic, making their potential disruption a significant concern.

Targeted Attacks Pose a Greater Threat

While resilient to random failures, the research highlights Bitcoin’s vulnerability to targeted attacks. Researchers discovered that a coordinated attack focusing on key “chokepoints” could be far more effective in disrupting the network. Specifically, targeting just five of the largest routing domains – Hetzner, OVH, Comcast, Amazon, and Google Cloud – could cripple Bitcoin CoinDesk.

The Role of Tor in Enhancing Resilience

Interestingly, the study also found that the increasing adoption of Tor (The Onion Router) by Bitcoin nodes enhances the network’s resilience. The concentration of Tor relay infrastructure in well-connected European countries creates a “compound barrier to disruption,” making censorship and physical attacks more difficult CoinTelegraph. Researchers noted that Bitcoin’s shift to Tor represents a self-organized response to regulatory pressure, simultaneously enhancing infrastructure resilience.

Study Methodology

Researchers Wenbin Wu and Alexander Neumueller utilized a Buldyrev-style cascade model to assess the interdependencies within the Bitcoin network and its supporting infrastructure arXiv. This model is commonly used to analyze complex systems like power grids and transportation networks. The longitudinal study is the first of its kind, providing a data-driven assessment of Bitcoin’s physical infrastructure resilience MSN.

Implications and Future Concerns

The findings offer reassurance regarding Bitcoin’s ability to withstand large-scale, random infrastructure failures. But, the vulnerability to targeted attacks underscores the importance of network diversification and security measures. With increasing disruptions to undersea cables in critical regions like the Baltic Sea, the Middle East, and the Taiwan Strait, maintaining the resilience of the infrastructure supporting Bitcoin remains a crucial challenge CoinDesk.