ZDNet: WannaRen ransomware author contacts security firm to share decryption key
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[1]https://www.zdnet.com/article/wannaren-ransomware-author-contacts-security-fi
rm-to-share-decryption-key/

References

   1. https://www.zdnet.com/article/wannaren-ransomware-author-contacts-security-firm-to-share-decryption-key/