这两个都是系统更新补丁，MSXML.4.0 SP2(KB936181)是防止受到黑客攻击的补丁，微软原话如下：这是防黑客攻击的 A security issue has been identified in Microsoft XML Core Services (MSXML) that could allow an attacker to compromise your Windows-based system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer. Once you have installed this item, it cannot be removed. MSXML.4.0 SP2(KB954430)也是保护你计算机的补丁，这是在Microsoft XML Core Services (MSXML) 中发现的一个安全性问题，攻击者利用该问题可以危害并控制您的基于 Windows 的系统。通过安装更新补丁MSXML.4.0 SP2(KB954430)可以帮助保护您的计算机。在安装此项之后，您可以需要重新启动计算机。此项一旦安装，则无法删除。
