在浏览网页时^(Time)，我们一次又一次面临多种网络钓鱼和恶意软件攻击的威胁。这就需要一个全面的解决方案来隔离潜在的基于浏览器的攻击并应对这种日益严重的威胁。幸运的是，微软^(Microsoft)通过为Chrome和Firefox浏览器提供Windows Defender 应用程序防护扩展^{(Windows Defender Application Guard Extension)}来提供保护。该扩展程序可让您在单独的窗口中查看浏览器中不受信任的网站，从而保护您的设备免受高级威胁攻击。

Windows Defender 应用程序防护^{(Defender Application Guard)}浏览器扩展

在将扩展程序添加到浏览器之前，扩展程序可能会提示您从Microsoft Store安装^{(Microsoft Store)}Windows Defender Companion应用程序。即使在此之后，如果扩展无法安装，请重新启动设备并检查问题是否已解决。它应该！

解决后，扩展程序将立即开始工作。因此，当您尝试访问任何不受信任的网站时，Windows Defender 应用程序防护扩展^{(Windows Defender Application Guard Extension)}只会将其重定向到隔离版本（单独的窗口）。

在那里，通过使用一些独特的基于硬件的隔离方法，它在轻量级容器中打开不受信任的网站。如果您尝试访问的不受信任的网站看起来可疑或被证明是恶意的，它会继续保留在 Application Guard 的安全容器中，并且不会进入您的系统。这是因为您尝试打开网站的容器通过Hyper-V^(Hyper-V)虚拟化技术与操作系统保持分离。因此，该扩展程序可确保不受信任的网站在Application Guard的隔离环境中安全打开。

因此，您的数据将得到安全保护，并且永远不会泄露。此外，由您的 IT 策略和企业管理员定义的受信任网站会继续在浏览器中打开。

要配置Windows Defender 应用程序防护^{(Windows Defender Application Guard)}扩展，请按照以下建议的步骤操作：

1. 验证设备是否满足必要的要求。
2. 从Microsoft Store^{(Microsoft Store)}安装新的Windows Defender Application Guard配套应用程序。
3. 安装Microsoft提供的^(Microsoft)Google Chrome或Mozilla Firefox浏览器扩展。
4. 重启设备。

重新启动设备并启动浏览器（Google Chrome或Mozilla Firefox）后，您将看到Windows Defender Application Guard登录页面。

如果您在配置过程中遇到任何问题或中断，请不要担心！您将获得解决配置错误的所有基本说明。

如果一切正常，只需从Application Guard会话开始，无需输入URL或通过单击浏览器菜单栏上的扩展图标来单击链接。

要删除扩展，只需右键单击扩展图标并选择“从 Chrome 中删除^{(Remove from Chrome)}”。Firefox也必须遵循类似的过程。

^{(Get Windows Defender Application Guard Extension)}在此处获取适用于Chrome^{(Chrome here)(Chrome here)}的 Windows Defender 应用程序防护扩展，并在此处获取适用于Firefox^{(Firefox here)(Firefox here)}的Windows Defender Application Guard Extension。

提示^(TIP)：Microsoft 还为 Chrome 提供 Windows Defender 浏览器保护。

Windows Defender Application Guard Extension for Chrome & Firefox

Time аnd agaіn we face thrеats of several phishing and malware attacks whilе browsing web. This calls for a comprehensive solution to isolate potentіal browser-based attacks and deal with this rising menace. Fortunately, Microsoft has come forward with protection by offering the Windows Defender Application Guard Extension for Chrome and Firefox browsers. The extension lets you view untrusted websites of a browser in a separate window thereby protecting your device from advanced threat attacks.

Windows Defender Application Guard browser extension

Before adding the extension to your browser, the extension may prompt you to install the Windows Defender Companion app from the Microsoft Store. Even after that, if the extension fails to install, restart your device and check if the problem is resolved. It should!

When resolved, the extension will start working instantly. So, when you try to visit any untrusted website, Windows Defender Application Guard Extension simply redirects it to an isolated version (separate window).

There, by using some unique hardware-based isolation approach, it opens untrusted websites inside a lightweight container. If an untrusted website you are trying to visit appears suspicious or turns out to be malicious, it continues to remain under the Application Guard’s secure container and does not enter your system. This is made possible as a container in which you are trying to open a website remains separated from the operating system via Hyper-V virtualization technology. As such, the extension ensures that untrusted websites open securely inside Application Guard‘s isolated environment.

Thus, your data is kept safe and is never leaked. Moreover, trusted websites, as defined by your IT policy and enterprise administrator, continue to open in the browser.

To configure the Windows Defender Application Guard extension, follow the steps suggested below:

1. Verify that the device meets the necessary requirements.
2. Install the new Windows Defender Application Guard companion application from the Microsoft Store.
3. Install the extension for Google Chrome or Mozilla Firefox browsers provided by Microsoft.
4. Restart the device.

After you restart your device and launch your browser (Google Chrome or Mozilla Firefox), you will see a Windows Defender Application Guard landing page.

If you face any issues or interruptions during the configuration process, don’t worry! You will be provided with all essential instructions to resolve the configuration errors.

If all looks good, just start with an Application Guard session without entering a URL or clicking on a link by clicking the extension icon on the menu bar of the browser.

To remove the extension, simply right-click on the extension icon and select ‘Remove from Chrome‘. A similar process has to be followed for Firefox.

Get Windows Defender Application Guard Extension for Chrome here and for Firefox here.

TIP: Microsoft also offers the Windows Defender Browser Protection for Chrome.

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