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Everything you need to know about World’s Biggest Ransomware attack

The technique of using a computer virus to hold data hostage has been around for decades,gaining more notoriety in recent years. But the massive attack that has spread around the world since Friday has taken it to a whole new level.

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The technique of using a computer virus to hold data hostage has been around for decades,gaining more notoriety in recent years. But the massive attack that has spread around the world since Friday has taken it to a whole new level.

Spanish telecommunications giant Telefonica was the among the first large company to be infected by WannaCry before Britain’s National Health Service also reported being hit by the attack on Friday, leading to thousands of cancelled appointments and operations.

Most ransomware is spread hidden within Word documents, PDFs and other files normally sent via email, or through a secondary infection on computers already affected by viruses that offer a back door for further attacks.

The malware used in the attacks encrypts the files and also drops and executes a decryptor tool. The request for $300 – $600 in Bitcoin is displayed along with the wallet.

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The creators of this piece of ransomware are still unknown, but WannaCry is their second attempt at cyber-extortion. An earlier version, named WeCry, was discovered back in February this year: it asked users for 0.1 bitcoin (currently worth $177, but with a fluctuating value) to unlock files and programs.

Marcus Hutchins, IT expert who saved the world from ransomware virus is working with GCHQ to prevent repeat. The self-taught 22-year-old took just a few hours to stop the breach,which had already spread to more than 200,000 victims – including the NHS – across 150 countries.

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In India, The central government had earlier said the ongoing ransomware cyberattack didn’t have a serious impact in the country. But reports say, Kolkata, Delhi, Bhubaneshwar, Pune and Mumbai were worst hit. Corporates are internally trying to resolve it through their IT team.

Till now they have earned $101,000 USD till saturday.

How to protect yourself?

The global cyberattack is also a reminder to always install updates and patches on your computer to close any vulnerabilities.

PC users should patch their machines with updates from Microsoft, especially those using older versions of operating systems such as Windows XP. Microsoft did put out a patch two months ago for more recent systems, but not all users may have downloaded it.