NeTEx (Network and Timetable Exchange) is a European standard for exchanging planned public transport information. It defines a common structure for data such as routes, stops, timetables, service patterns, and fare-related information, so different operators and mobility platforms can share the same schedule data in a predictable way.
In cyber security, NeTEx matters because transport apps and back-office systems often trust these feeds to build trip plans and operational views. If an attacker tampers with a NeTEx feed, or if a partner integration is misconfigured, passengers can see wrong routes, outdated schedules, or broken journey planning. Defenders therefore treat NeTEx endpoints like critical data services: they use authentication, integrity checks, schema validation, version control, rate limiting, and logging to reduce the impact of bad or malicious updates. In modern mobility systems, the security of the data exchange is as important as the standard itself.