When is the initial lookback period measured from?

The initial lookback period is measured from the start of the learning mode. During the learning mode, the system starts to observe and gather data about normal activities and behaviors within the application or network. This period is crucial because it allows the system to establish a baseline of typical behavior against which future activity can be compared. By starting the lookback period at this point, the system can effectively identify anomalies or deviations that may signify security threats.

Other options refer to different critical points but do not capture the purpose of the lookback period effectively. For instance, measuring from the day the application was last used would not account for the ongoing normal behavior that may have occurred if the application were actively being used. Similarly, beginning the lookback period from the initial days of deployment might not offer enough time to adequately assess user patterns or establish a meaningful baseline. Finally, starting after the first policy match fails to leverage the foundational understanding that the learning mode provides, which is essential for accurately detecting and responding to threats.