前摄式检测（Proactive detection）或称主动检测是应对0Day的紧张方法之一。前摄性检测主要是指通用特性或称基因码（generic）和开辟式（heuristic）。
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Heuristics are a form of proactive detection that closes the window during which computers are vulnerable.
启发式是在计算机易于攻击时关闭空窗的一种主动检测形式。
Then, on this basis to discuss the properties of an undercover investigation, which include: proactive detection, enforcement measures, secret investigation.
然后在此基础上讨论卧底侦查的属性，具体包括：主动型侦查、强制措施、秘密侦查。
For example, IPMI enables the monitoring of sensors (such as temperature, fan speeds and voltages) for proactive problem detection.
例如，IPMI能进行传感器的监测(如温度、风扇速度和电压)，作为问题苗头检测。
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