India, Nov. 16 -- Bengaluru police have uncovered what they describe as one of the city's biggest links to an international cyber-fraud network, exposing a local operation accused of scamming US citizens by posing as Microsoft's technical support team.

The elaborate racket allegedly used fake security alerts and fabricated Federal Trade Commission (FTC) violation warnings to pressure victims into paying large sums through cryptocurrency, Times of India reported.

The crackdown began after Cyber Command's special cell and officers from the Whitefield division received a credible tip-off.

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Acting on this information, police raided the office of...