On January 14th NSA warned users about the vulnerability in Windows 10 and have warned users to do the updates  to protect them from the Cryptographic Vulnerability

  1. If you want to run your Windows Update manually to get the patch more quickly, follow these instructions from Microsoft and click the “Check for Windows updates” button.
  2. Alternatively, when you are at your Windows 10 computer, click the Start button, select Settings, then Update & Security, then Windows Update, and click Check for updates to run Windows Update manually.
  3. If you have multiple PCs running Windows 10, ensure they are all up-to-date with the latest security patches.
  4. DO NOT attempt to download a patch for this vulnerability from anywhere other than the Windows Update tool. Windows system updates should only be downloaded directly from Microsoft.

The Vulnerability could allow the attacker to use a spoofed code-signing certificate (digital signature) to sign malicious software, allowing malware to appear to be from a trusted source