The Ukrainian security service has warned of a large-scale cyber-attack on the country’s computer networks.

The SBU said in a statement that the attack could take place in the coming days and urged companies and government agencies to take preventive measures.

It gave no details of the potential attack, but said it was based on information from foreign partners.

Ukraine has been a frequent target of cyber-attacks, including one that knocked out power to parts of the country in December 2015.

Which malware was used in the attack on Ukraine’s power grid?

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