Your company has a Microsoft 365 E5 subscription

The Past activity detection policy timeframe is an important configuration setting for Insider risk management, which is included in the Microsoft 365 E5 subscription. This setting determines the time period that will be monitored for suspicious activity related to insider threats. The longest possible timeframe that can be configured is 180 days. This allows organizations to monitor user activity over a longer period of time in order to detect any suspicious or malicious actions that may have been taken. This timeframe can be adjusted depending on the organization's specific security needs and can be set to a shorter period if desired. By configuring the Past activity detection policy timeframe to 180 days, organizations can maximize their ability to detect and respond to insider threats in a timely manner.