Theft of NS Power customer data is likely ransomware attack: security experts / Netherlands misses EU deadline to address NS monopoly on Dutch railway / NS to run longer trains more frequently this King's Day / Arriva expands night train service, challenging NS control over key routes / NS challenges Arriva's night train between Zwolle and Amsterdam / NS adds 1600 trains a week but high-speed line problems persist / NS to launch massive rail expansion on Sunday; 8 new Amsterdam-Schiphol trains hourly / NS will keep exclusive rights to operate the main Dutch rail network for now / Half of Dutch would take the train less if NS hikes ticket prices by 10%