Security software firm
The ransomware has claimed thousands of victims all over the world.
Symantec’s list of worst hit nations in the world is topped by Ukraine, the US and Russia, while France, the UK, Germany, China and Japan also feature on the list.
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Some of the biggest corporations that have borne the impact of ths attack are Russia's largest oil company Rosneft, Ukraine's international airport, shipping firm AP Moller-Maersk, and advertising giant WPP.
In India, the attack is said to have affected one of the terminals at the