Polish intelligence is investigating a cyber attack on Poland’s railway system.
The BBC reports that hackers interfered with the system, disrupting the operation of trains in the northwest of the country.
The hacker attack was also mixed with Russia’s national anthem and a speech by Russian President Putin.The cyber attack immediately stopped 20 trains, but the service was restored within a few hours.
Russian authorities suspect that the cyber attack was carried out by Russia. Security experts have also said that Russia is conducting cyber attacks in Ukraine to test its hacking tools.
For this reason, many Western countries have called earlier for states to further strengthen cyber security measures.