Criminals have published the personal data of approximately 8.7 million people online after breaching the systems of Manchester Airport Group, which operates three of the UKs busiest airports: Manchester, London Stansted, and East Midlands. The breach, described as a sophisticated ransomware attack, compromised customer data collected through free terminal Wi-Fi services, airport parking bookings, lounge reservations, and Fast Track services. Published information includes email addresses, vehicle registration numbers, and contact details but not payment card data. The hackers published the data after MAG refused to meet their ransom demand, in one of the largest aviation-sector data breaches in recent memory. The UKs National Crime Agency is investigating.