Shipping giant A.P. Moller-Maersk , which handles one out of seven containers shipped globally, said the Petya cyber attack had caused outages at its computer systems across the world on Tuesday.
Russia’s top oil producer Rosneft said on Tuesday its servers had been hit by a large-scale cyber attack, but its oil production was unaffected.
Ukraine’s central bank also said a number of Ukrainian commercial banks and state and private companies had been hit by cyber attacks via an “unknown virus”.