Is Your Fintech App Exposing You? Shocking Risks from Shadow APIs Revealed!

As the financial landscape rapidly evolves, banks are increasingly turning to fintech partnerships to enhance their digital services. This shift has made externally facing APIs (Application Programming Interfaces) a crucial component of modern banking infrastructure. However, a recent report from the Info-Tech Research Group reveals that many institutions are ill-prepared to manage the complexities that come with these integrations.

According to findings released on March 20, 2026, from the Arlington, Va.-based research firm, the swift expansion of API integrations often outpaces the maturity of governance models within banks. The study highlights significant vulnerabilities due to incomplete API inventories and inconsistent oversight practices that increase exposure to evolving cyber threats. In some instances, direct integrations with fintech partners leave critical entry points unmonitored, thereby bypassing centralized gateway controls entirely. This has resulted in reduced visibility over authentication, monitoring, and traffic management, making banks more susceptible to attacks.

Jon Nelson, principal advisory director at Info-Tech Research Group, emphasized the gravity of the situation, stating, “APIs serve as the connective tissue linking on-premises systems with cloud, SaaS, and third-party services. However, many financial institutions face a significant challenge in the form of shadow APIs—undocumented or unmanaged interfaces that can outnumber known APIs by as much as ten to one.” He cautioned that without comprehensive API security policies and effective enforcement mechanisms, banks could find themselves facing substantially greater risks than they anticipate.

Addressing the Risks

In response to these increasing security pressures, Info-Tech has published its blueprint titled Improve Your API Processes to Secure Your Fintech Integrations. This comprehensive resource outlines a three-step action plan designed to strengthen API governance and secure fintech ecosystems.

1. Create a Comprehensive Inventory of All APIs in Production: Banks need to collaborate between enterprise architecture, infrastructure, and application teams with business stakeholders to identify, catalog, and document all internal and external APIs, including previously unidentified or shadow APIs. A complete inventory is essential for consistent governance and security.
2. Evaluate the API Gateway and Its Configuration: IT operations and security teams should assess the maturity of the bank's API gateway deployment. This includes reviewing essential capabilities like authentication, authorization, rate limiting, monitoring, and logging to ensure they align with current security best practices and regulatory expectations.
3. Analyze API Transactions to Guide Secure Configuration: Application development, DevSecOps, and security architecture teams must review API transaction flows against best practices to identify control gaps. Findings should inform updates to gateway configurations, with oversight from the bank's risk function to ensure alignment with enterprise risk tolerance.

By implementing structured API governance and modern gateway capabilities, banks can significantly reduce their exposure while enabling innovation at scale. Info-Tech's blueprint serves as a critical methodology for moving from fragmented API management to a mature, security-first fintech integration model, thus allowing for the scalability of fintech partnerships without compromising regulatory compliance, operational stability, or customer trust.

The findings underscore the urgent need for banks to rethink their API strategies. With the rise of automation and AI-enabled discovery techniques employed by adversaries, the potential for undetected vulnerabilities looms larger than ever. The call to action from Info-Tech Research Group is clear: banks must prioritize API security to safeguard their financial ecosystems and maintain customer confidence in an age where digital transformation is both a necessity and a risk.

For more insights from Info-Tech's experts and to access the complete Improve Your API Processes to Secure Your Fintech Integrations blueprint, interested parties can reach out via [email protected].