The 24-hour IT failure that paralysed Deutsche Bahn this week, halting trains from Berlin to Munich, sent a chill through the industry. As a British rail worker told me: 'It could have been us.' But it wasn't. And that is no accident.
Germany’s rail network ground to a halt on Wednesday after a software update crashed the train control system. Long-distance services were cancelled. Regional trains were delayed. Passengers slept on station floors. The cause: a routine patch that triggered a cascade of IT failures, exposing the fragility of a system built on cost-cutting and fragmented oversight.
Compare that to Britain. Our network is not perfect. But when it comes to cyber security and IT resilience, we have learned the hard way. After the 2017 NHS ransomware attack, the rail industry took a hard look at its own defences. The result is a centralised cyber security unit within Network Rail that runs constant stress tests. 'We know our system is vulnerable, but we know where the weak spots are,' a Network Rail engineer told me last year. 'We don’t just install updates and pray.'
That is precisely what happened in Germany. The software update that caused the chaos was issued by a third-party provider. Deutsche Bahn’s system was not segmented. The failure spread like a virus. In Britain, such an event would be contained by design. After the 2018 Rail Accident Investigation Branch report warned of 'catastrophic' cyber risks, Network Rail invested £50 million in a ‘defence in depth’ approach. Every signal box, every control centre, has a backup. And those backups are tested monthly.
The irony is that Britain’s rail network is older, more creaky, and underfunded. But incremental investment in IT security has paid off. The Office of Rail and Road, the regulator, now publishes a biannual Cyber Security Maturity Assessment. The last one, in 2023, found that 95% of critical systems met or exceeded baseline security standards. Germany had no such assessment. They were flying blind.
There is a lesson here for the government as it pushes for rail reform. The Great British Railways project promises to simplify the network and improve efficiency. But if that means more centralised IT systems, the risk of a single point of failure rises. The German chaos is a warning: do not let cost savings override security. The unions have warned about this. 'Privatisation and fragmentation create weak spots,' a TUC official told me. 'If you outsource your signal control to the cheapest bidder, you are asking for trouble.'
The German failure also highlights the human cost. Passengers stranded. Workers unable to get to their jobs. The old and vulnerable left on cold platforms. That is the real economy: the one where a train delay means a lost shift, a missed appointment, a child not picked up from school. The IT failure was not an act of God. It was a failure of management and oversight.
For British workers, the message is clear: we must not become complacent. Our network is more secure today, but that is because of constant vigilance. As one union rep put it: 'We are only one bad decision away from what happened in Germany.' The government must ensure that future IT investments – in digital signalling, in smart ticketing – are built on a foundation of security, not just convenience.
Britain’s rail network held. But the integrity of that network depends on the decisions we make now. The cost of a proper cyber security system is high. The cost of a breakdown like Germany’s is higher still. Ask any of the hundreds of thousands of passengers who slept on station floors this week.
