San Francisco’s transport agency has been hit by a hack attack which led to customers being able to travel for nothing. The hackers have made a ransom demand of 100 Bitcoin, which amounts to about $70,000. As a precaution, staff shut off all ticketing machines on the network. Computers across the city’s transport network, including at stations, were disabled with screens displaying a message from the attackers. Again, the importance of cyber security in the digital economy is paramount.

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