Certain period is needed for coping with newly-discovered software security vulnerability.
Zero-day attack is to attack during the period unpatched by the software developer from the newly-discovered security vulnerability.

The EMET (Enhanced Mitigation Experience Toolkit) tries to protect the zero-day attack. Please remember that the security countermeasure cannot protect perfectly. Sometimes, the tool may be able to protect the zero-day attack. Of course, you had better install the tool.

Download

• http://technet.microsoft.com/en-US/security/jj653751

The latest version is EMET 4.1 on April 30, 2014.
 * EMET 5.0 is introduced, but the version is technical preview for the developer .

Installation

1. Open the downloaded tool.
   
   * If the following error displays, please download and install Microsoft .NET Framework version 4.0 in Microsoft .NET Framework, first.
   

    

2. Click “Next” button.
   
3. After the tool is installed, select “Use Recommended Settings”.

   
   * By the recommended settings, major software, such as Office, Internet Explorer, Adobe, Java, is protected.

4. Confirm the key icon in the task menu (The edge of right button side).
   

関連情報

• (Critical Issue) Please carry out the countermeasure for the zero-day attack.
• Microsoft .NET Framework