APIs are one of the most important technologies in digital business ecosystems. And yet, the responsibility for their security often falls to AppSec teams – and that’s a problem.  This organizational mismatch creates systemic risk: business teams assume APIs are “secured,” while attackers exploit logic flaws, authorization gaps, and automated attacks in production. As Tim The post Why API Security Is No Longer an AppSec Problem – And What Security Leaders Must Do Instead appeared first on Wallarm.

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API security has outgrown traditional AppSec approaches because modern attacks exploit business logic and authorization flaws through legitimate-looking traffic in production, rather than malformed requests. The shift-left strategy alone is insufficient since APIs are continuously deployed, consumed by diverse clients, and abused at runtime in ways that pre-production testing cannot predict. Effective API security requires treating it as a cross-functional business risk with runtime behavioral monitoring, not just a development-phase vulnerability scanning problem. Security leaders must prioritize attack-aware visibility, runtime protection against automation and abuse patterns, and alignment with business impact rather than relying solely on pre-production controls.

Why API Security Is No Longer an AppSec Problem – And What Security Leaders Must Do Instead

How API Security Became an AppSec Problem (and Why That Model Broke)

The Modern API Threat Landscape AppSec Was Never Designed to Own

Why “Shift-Left” Alone Is Not a Strategy for API Security

API Security Is a Business Risk, Not an AppSec Function

The Road Ahead: APIs, AI, and the Next Expansion of Risk