API Secure is Data Theorem’s API Security product designed to discover APIs, test them for vulnerabilities, and provide real-time active protection. It continuously analyzes traffic and configurations across clouds to build an inventory, classify sensitive data, and identify exposures. The engine tests APIs for weaknesses and misconfigurations, then enforces protection policies to block attacks and risky behaviors. Security teams receive prioritized alerts and remediation guidance, with findings integrated into existing SIEM and DevOps toolchains.