在这种情况下会存在一些风险，比如镜像可能被动过手脚，从而为攻击者提供后门。
In this case, an image might, for example, have been manipulated so as to provide back-door ac-cess for an attacker.
在完善各种被动响应措施的同时，也尝试采用远程阻断、甚至警告攻击者的主动响应方式。
Coinciding with completing all kinds of passive response measures, the system also tries to adopt active response manner such as remote interdiction, even warning intruder.
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