https://thenextweb.com/security/2020/08/24/indian-ticketing-platforms-unsecured-server-exposed-personal-info-of-700000-passengers/

An unsecured server of the Indian ticket platform RailYatri exposed the personal information of over 700,000 passengers. The details in the database included full names, phone numbers, addresses, email IDs, ticket booking details, and partial credit or debit card numbers. 

The Indian railway network is one of the busiest transportation systems around the world, catering to over 24 million passengers daily. RailYatri is primarily designed for ticketing booking tickets and train information.