Microsoft Releases Update to Remove Fraudulent DigiNotar Root Certificate from Windows

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Recently Microsoft issued a security advisory warning of at least one fraudulent digital certificate issued by DigiNotar, a root certificate authority.

According to Microsoft, the company is aware of active attacks using at least one fraudulent digital certificate issued by DigiNotar, a certification authority present in the Trusted Root Certification Authorities Store. A fraudulent certificate could be used to spoof content, perform phishing attacks, or perform man-in-the-middle attacks against all Web browser users including users of Internet Explorer.

This is not a Microsoft security vulnerability; however, the certificate potentially affects Internet users attempting to access websites belonging to Google.

Based on preliminary investigation, Microsoft is providing an update for all supported releases of Microsoft Windows that revokes the trust of the following DigiNotar root certificates by placing them into the Microsoft Untrusted Certificate Store:

  • DigiNotar Root CA
  • DigiNotar Root CA G2
  • DigiNotar PKIoverheid CA Overheid
  • DigiNotar PKIoverheid CA Organisatie - G2
  • DigiNotar PKIoverheid CA Overheid en Bedrijven

For supported releases of Microsoft Windows, typically no action is required of customers to install this update, because the majority of customers have automatic updating enabled and this update will be downloaded and installed automatically.

You can download and install the update manually using following links:

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This article was posted by in following section: Windows 7, Windows Vista, Windows XP.

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