Open Banking API Security: The Complete Guide for 2026
Global Open banking API call volumes are set to cross the 720 billion mark by 2029, and attackers know it. With the global open banking market surging past $38 billion in 2025 itself and projected to exceed $115 billion by 2030, the financial data flowing through these APIs is highly lucrative for threat actors. With over 7.5 million calls made to just AI APIs, they have now graduated from a technical challenge to a business imperative.