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French researchers find way to save Windows files infected by WannaCry

French researchers find way to save Windows files infected by WannaCry

French researchers reported on Friday that they finally discovered a way to save Windows files affected by WannaCry encryption attack, which started last Friday and has infected over 300,000 computers in almost 150 countries.

As the WannaCry ransomware continues to spread - albeit more slowly now - across the internet, security researchers are discovering more about the malware's impact.

Delpy calls his free tool for decrypting infected computers without paying ransom "wanakiwi".

Suiche has also published a blog with technical details summarising what they have built to share with organisations infected by WannaCry.




The researchers - Adrien Guinet, Matthieu Suiche and Benjamin Delpy - worked separately. And, it turns out, for all the hype surrounding your grandpa's taste in operating systems, it wasn't Windows XP that was the problem.

Delpy added that so far, banking, energy and some government intelligence agencies from several European countries and India had contacted him regarding the fix. He added that the software helps recover the prime numbers of the RSA private key that are used by WannaCry. Thus, it becomes less surprising that most infections affected device running Windows 7, but one would hope that Microsoft paid more attention to it given its enormous popularity on the user market.

In his research summary, Guinet - who works for the Paris-based firm Quarkslab - said his software had only been tested to work under Windows XP.

You might expect Windows XP to be next in the list, but no. 2008 R2 Server clients claim that spot with just over 1 percent.


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