WannaCry was one of the most damaging malware attacks in history. On Friday, May 12, 2017, WannaCry ransomware infected computers all around the world, demanding that victims pay a ransom to get their data back.
Also known as WannaCrypt, WanaCrypt0r, WCrypt, and WCRY, the WannaCry worm takes advantage of a specific exploit in Microsoft’s Server Message Block (SMB) protocol codenamed “EternalBlue” and uses phishing email scam tactics to infect older, unpatched Microsoft Windows systems.
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What Is WannaCry?
WannaCry was ransomware that infected computers and restricted access to files until a ransom was paid. It was designed to take advantage of a Windows XP vulnerability, which Microsoft had patched with the MS17-010 update in March 2017. Many XP users hadn’t installed this security patch prior to the attack, while non-XP users were also vulnerable to WannaCry because it affected newer versions of Windows as well.