As reported by Censor.NET citing UNIAN, this is suggested from data offered by antivirus developer ESET.
As seen from the infographics they released, 75.24 percent of the attack affected computer systems in Ukraine, 9.06 percent - in Germany, 5.81 percent in Poland. The top three countries are followed by Serbia (2.87 percent), Greece (1.39 percent), Romania (1.02 percent), Russia (0.82 percent), and Czech Republic (0.82 percent).
On June 27-29, numerous Ukrainian companies, government agencies, and banks were attacked by a large-scale computer virus Petya.A.
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List of Ukrainian companies and agencies whose websites were attacked by hackers on June 27 (live updates)(0)