Friday’s ransomware outbreak, which used recently revealed weaknesses in Microsoft’s Windows operating system to spread further and faster than any before, has prompted the Redmond-based developer to break its own rules on software maintenance in an effort to keep users safe. The ransomware, also known as “WanaCryt0r”, “WeCry”, “WanaCrypt” or “WeCrypt0r”, used a vulnerability in a Windows Server component to spread within corporate networks.

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