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Cybersecurity Under the Ocean: Submarine Cables and US National Security

Justin Sherman
Wednesday, January 18, 2023, 9:59 AM

Submarine cables' security and resiliency are vital to the global internet as we know it—but this infrastructure faces many risks that policymakers must help tackle.

Published by The Lawfare Institute
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Most internet users' online experience is wireless, but in reality, hundreds of submarine cables, laid across the ocean floor around the world, are what carry 95 percent of intercontinental internet traffic. Submarine cables' security and resiliency are vital to the global internet as we know it—but this infrastructure faces many risks that policymakers must help tackle.


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Justin Sherman is a contributing editor at Lawfare. He is also the founder and CEO of Global Cyber Strategies, a Washington, DC-based research and advisory firm; a senior fellow at Duke University’s Sanford School of Public Policy, where he runs its research project on data brokerage; and a nonresident fellow at the Atlantic Council.

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