Cyber-crime Investigators spent weeks unravelling enthusiast's bedroom project A university student in Taiwan is out on bail after being accused of interfering with signals sent to the country's high-speed rail network, bringing trains to a halt. In a statement issued to local media, Taiwan High Speed Rail (THSR) confirmed that a 48-minute disruption to three trains on April 5 was caused by a rogue General Alarm signal of the kind triggered by specialized equipment used by train station staff. This General Alarm signal was sent via a terrestrial trunked radio (TETRA) handset at Taichung Station. Staff followed protocol and engaged their emergency response plans, which in turn instructed trains to manually stop. These devices are not the kind commuters usually carry around. Functioning much like walkie-talkies, they are typically used by station staff to communicate with one another and train drivers.…