The sensitive credentials printed and attached to the top of a station controller’s monitor were aired on Wednesday night on BBC. The login credentials were visible for about 44 minute in the BBC documentary “Nick and Margaret: The Trouble with Our Trains” The documentary was available on the YouTube, but have now been removed due to security concerns. The incident occur few days after the news came that the computer systems controlling the railway signalling system in the United Kingdom could potentially be hacked by cyber criminals to cause oncoming trains to crash into one another.
Source: https://thehackernews.com/2015/05/railway-system-password.html