In the digital age, eBay is in an arms race against cyber threats which constantly evolve their strategies to exploit APIs and disrupt services. This talk introduces a proactive and adaptive framework driven by Machine Learning to safeguard infrastructure ecosystems at the network's edge. We will cover how this is designed and implemented as a multi-layer and pluggable security framework that operates at scale. We will discuss the benefits of implementing security measures at the edge, the challenges overcome, and the positive implications for user trust and platform integrity at large scale.