The Hidden Backbone of the Internet: Subsea Cable Security with Alex Botting

Undersea cables quietly carry almost all global internet traffic yet rarely feature in security debates. This episode explains how subsea infrastructure underpins the global economy, data flows, and modern military operations while facing frequent "accidental" disruptions and growing geopolitical risk. Listeners hear why chokepoints, island dependencies, and hotspots from the Red Sea to the Taiwan Strait keep national security officials up at night. The conversation also explores how redundancy, smarter investigations, and faster permitting can harden this hidden backbone against both negligence and sabotage. Frank and Alex close by looking at AI, quantum, fiber sensing, and satellite backups as the next frontier for cable resilience and deterrence. Main Topics Covered Subsea cables as the physical backbone of global internet and finance. How outages happen, from ship anchors to suspected sabotage. Strategic chokepoints, island dependencies, and contested regions like the Red Sea. Building resilience through redundancy, permitting reform, and trusted infrastructure partners. New monitoring tools: fiber sensing, AI, and quantum for cable security. How governments and industry share intelligence and fund resilient capacity. Key Quotes: "Subsea cables carry the vast majority of Internet traffic around the world… Estimates vary from 95 to 99% of Intercontinental data traffic. So when you think about the Internet, subsea cables are the basis of the Internet." "Redundancy is our biggest defense… We have 100 cables coming into the US and therefore it makes it very hard to do anything meaningful in a short time frame to actually impact it. "Do I think our adversaries would want to do this [tap cables]? Yes... Do I think they can do it? Possibly. Do I think the juice is worth the squeeze? No, I don't." "There were more cable cuts in the Taiwan Strait in January of this year than either 2024 or 2023 in total. That is a sharp uplift at a time when we know that hostility in that part of the world is rising. I would be shocked if none of those incidents were knowingly done." "The entire Starlink... global capacity is equivalent to [only a few] subsea cable[s]... So when you talk about truly replacing [subsea cables], it's not there." Relevant Links and Resources Alex Botting paper "Shoring Up Subsea Security" for the Center for Cybersecurity Policy and Law. House Homeland Committee Hearing: An Examination of Foreign Adversary Threats to Subsea Cable Infrastructure Alex's Podcast: Distilling Cyber Policy Guest Bio: Alex Botting is the Senior Director of Global Security & Technology Strategy at Venable.  His career has focused on shaping policies at the intersection of security, technology & telecoms in more than 50 countries and multilateral organizations around the world. In November he testified before the House Homeland Security Committee about threats to the subsea cable infrastructure.