Cimpanu, Catalin. “Blockchain Transactions Confirm Murky and Interconnected Ransomware Scene.” ZDNet, ZDNet, 4 Feb. 2021, www.zdnet.com/article/blockchain-transactions-confirm-murky-and-interconnected-ransomware-scene/.
Kaspersky. “What Is WannaCry Ransomware?” Usa.kaspersky.com, 13 Jan. 2021, usa.kaspersky.com/resource-center/threats/ransomware-wannacry.
