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WannaCry cyber-attack: The biggest ransomware offensive history

WannaCry cyber-attack: Is it the bigger ransomware offensive in history?

More than 74 countries have been heated by the allegedly bigger massive cyber-attack registered in the world history. Russia is until now the most affected. The Russian interior ministry said that about 1,000 computers had been affected in that country. China, United Kingdom, Spain and Germany are included in the list that has dragged 75,000 cases of the ransomware - known as WannaCry and variants of that name.

The Guardian pointed out that Kaspersky Lab, a cyber security company based in Moscow, has published a blogpost in which estimates that 45,000 worldwide attacks have been carried out until Friday. It added that the totals could be “much, much higher”.

Later in that day, security software maker Avast put the tally at 57,000 infections in 99 countries.

The offensive has affected companies and organizations such as NHS, FedEx, Renault and Telefónica.

WannaCry is a ransomware often delivered via emails which trick the recipient into opening attachments and releasing malware onto their system in a technique known as phishing, explained Telegraph website.

“Once your computer has been affected, it locks up the files and encrypts them in a way that you cannot access them anymore. It then demands payment in bitcoin in order to regain access”, added.

The payment exceeds the amount of $300 (£230) to unlock the files for each computer, as WannaCry program screenshots show.

Who was affected?

In Britain, the NHS was the worst hit. The health service faces a weekend of chaos after knowing the problem. Operations and appointments were cancelled and ambulances diverted as up to 40 hospital trusts became infected by. People in affected areas were advised to seek medical care only in emergencies, Telegraph reported.

In Spain, Telefónica was the most affected, but also power firm Iberdrola and utility provider Gas Natural; in France, the Renault car company; domestic banks, the interior and health ministries, the state-owned Russian railway firm and the second largest mobile phone network were all reported to have been hit in Russia; in Germany, a local railway ticket machine; in Italy, a university computer lab; Telecom from Portugal; the US delivery company FedEx; and a local authority in Sweden.

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