恶意代码在一个受信任的域或上下文中执行。
Execution of malicious scripts within a trusted domain or context.
默认情况下，会创建一个ProtectionDomain，并作为“特殊”情况处理，即属于这个域的代码被认为是受信任的并可以获得特殊的权限。
One ProtectionDomain is created by default and is treated "special," in that the code belonging to this domain is deemed trusted and can be granted special privileges.
有些辨识项(例如程序码来源的位置)通常来自受信任的应用程序定义域主机，因为只有主应用程序知道这项资讯。
Some evidence, such as where the code originates, usually comes from the trusted application domain host because only the host knows this information.
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