Train service in Denmark was disrupted for several hours due to a cyberattack on an IT subcontractor’s software testing environment, Danish train operator DSB said.
The attack targeted the Danish company Supeo which provides enterprise asset management solutions to railway companies, transportation infrastructure operators and public passenger authorities.
Supeo has not shared any information on the incident, but there has been speculation that the company may have suffered a ransomware attack. A DSB representative told Reuters that the attack “hasn’t targeted infrastructure or DSB, it was economic crime.”
While not a direct attack on DSB, the attack prompted Supeo to shut down its servers, which in turn affected locomotive drivers’ ability to operate the trains for several hours on Saturday.