Four major cyberattacks have been reported on UK railway computer networks over the past year, according to new statistics revealed by UK-based security firm Darktrace, which is employed to guard much of the UK's rail network from attack.
While detail about the full extent of the hacks remains unknown, experts indicate that such breaches are typically "exploratory" rather than disruptive.
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While detail about the full extent of the hacks remains unknown, experts indicate that such breaches are typically "exploratory" rather than disruptive.
Speaking with Sky News, Sergey Gordeychik, cybersecurity researcher at Russian firm Kaspersky Lab, said access to UK rail could give hackers control over everything from online information boards to the computer systems that manage signals, internal messages and even the trains themselves.
"If they have enough knowledge, then they can create real disaster related to train safety," he said. "We see at the moment that state-sponsored attackers are already inside critical infrastructure."
Gordeychik continued: "So they have access, they monitor, they collect intelligence but they don't try to create a disaster. Why? I believe that they don't have the order at the moment. But in case of any maybe warfare, it can be an option to use cyber weapon against civil infrastructure. This is scary."
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