May 25, 2023 — On an early January afternoon, a South Korean fishing boat, the Oyang 77, departed from Montevideo, Uruguay, for the plentiful waters off the coast of Argentina. A month later, it would be apprehended by the coast guard for illegal fishing.
As it intruded into Argentina’s territorial waters, the boat left a telltale digital signature, one that could be used to catch outlaw fishermen across the planet.