Wall Street's digital lifelines: How severed undersea cables could be a big problem for the global financial system

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While much of banking and trading seems to have gone digital, the global financial system still depends on a vast network of undersea cables that crisscross the sea floor. Carrying $10 trillion worth of transactions every day and powering Wall Street's global trading and communications, these cables have had little mainstream attention as they lay deep in the world's oceans for decades quietly serving their purpose.