In a scene straight out of a crime thriller, masked assailants tried to abduct a well-known crypto tycoon's daughter on the busy streets of Paris on Tuesday morning.

French prosecutors are investigating after a masked gang tried to kidnap the daughter of a crypto businessman in Paris in what is at least the third violent attack targeting wealthy crypto players and their families in recent months.

A Parisian shop-owner who helped prevent a masked gang from kidnapping the daughter of a French crypto businessman has been hailed as a hero after he rushed at the attackers with a fire extinguisher.