How Dynamic Application Security Testing Validates Risk at Runtime
Rapid7, Wednesday, September 23rd, 2026
Rapid7 explains how dynamic application security testing reproduces exploits at runtime, valuable for APIs and AI-backed applications.
Rapid7 describes how dynamic application security testing (DAST) tests applications the way an attacker would, showing how a weakness behaves in a running application, whether it can be reproduced, and giving developers evidence to fix it.
Unlike code analysis or dependency scanning, which look at an application before deployment, DAST interacts with the assembled, running application, which is especially valuable for APIs and AI-backed applications where risk can emerge from interactions among models, prompts, data, tools and permissions.
Rapid7 positions DAST as playing a direct role in continuous threat exposure management, helping validate which discovered exposures are actually worth prioritizing.