On Monday, a flight carrying 239 passengers from Mumbai to New York was suddenly stopped due to serious bomb threats made on social media. The threat led to not just this flight being grounded but also caused delays for two other flights.

Early in the morning, the airport in Mumbai received a troubling message on X (formerly known as Twitter). The message warned that there was a bomb on Air India flight AI119, which was headed to John F. Kennedy Airport (JFK) in New York. Authorities in ...