Matthew Birchall: Focus on infrastructure security

No one likes to spend their precious Saturday morning waiting for the train. But that is exactly what residents of northern Germany were forced to endure in early October, after cables needed to operate the trains were cut.

Traffic came to a standstill for three hours. Unless you owned a kiosk in the station serving coffee, you were unlikely to be impressed.

And all it took were two cables. Two cables.

This is just one small story that shows what can go wrong when critical infrastructure is not protected.