As the senior network analyst for a leading fintech organization, you have been tasked with ensuring seamless communication between the firm's global offices. Your network has been built with redundan

As the senior network analyst for a leading fintech organization, you have been tasked with ensuring seamless communication between the firm's global offices. Your network has been built with redundancy in mind, leveraging multiple service providers and a mixture of MPLS and public internet connections. One week after deploying a state-of-the-art Network Performance Monitoring & Diagnostics (NPMD) tool, you notice unusual traffic patterns originating from your European data center and targeting the corporate headquarters in New York. The traffic spikes periodically, heavily utilizing the MPLS link and sometimes saturating the public internet connection, resulting in significant data packet losses and application failures. Your task is to identify the root cause of these traffic anomalies and ensure optimal network performance for all critical business operations. Given this scenario, what could be the primary cause for these traffic spikes, and what should your Immediate course of action be?