Which of the following actions would not reduce the number of false positives from a correlation search?

Reducing the severity of a correlation search may seem like a way to lessen the impact of false positives; however, it does not directly address the root cause of those false positives. The severity rating primarily affects how alerts are prioritized, not the criteria used to generate those alerts. Thus, simply lowering severity might lead to a greater number of alerts since it may not filter out any alerts based on their relevance or accuracy.

In contrast, actions such as removing throttling fields or increasing the throttling window are aimed at managing how often specific alerts can trigger, thus helping to filter out repeat alerts that could lead to perceived false positives. Additionally, increasing threshold sensitivity tightens the criteria for what constitutes a noteworthy event, potentially reducing the number of alerts that are triggered based on less significant occurrences. Therefore, while reducing severity could affect how alerts are viewed, it doesn’t inherently reduce the volume of false positives generated by the correlation searches themselves.