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b'The app Truecaller estimates that as many as 56 million Americans have fallen foul to scam calls, losing nearly $20 billion. \\n\\nEnter L., an anonymous vigilante, referred to here by his middle initial, who seeks to expose and disrupt these scams, posting his work to a YouTube channel under the name \\u201cJim Browning.\\u201d\\n\\nOn today\\u2019s Sunday Read, Yudhijit Bhattacharjee follows L.\\u2019s work and travels to India to understand the people and the forces behind these scams.'