When there is a significant load of network activity from locations outside the organization's service area, especially at unusual times, it is important to investigate the nature of this traffic. The engineer should review the logs from network monitoring tools like StealthWatch or SIEM to identify the access points through which the traffic is coming. Understanding the services being accessed during these hours and cross-correlating with other source events can help in determining whether the activity is legitimate or if it indicates a potential security threat1