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19/08/2026 3:39 pm
TL;DR: Code analysis can identify insecure patterns, but it cannot determine what attackers can actually do with a running application, according to Equixly. Runtime flaws such as broken object-level authorisation, business logic abuse, undocumented APIs, and multi-step exploit chains require continuous offensive testing because the decisive risk appears only in production.
NHIMG editorial — based on content published by Equixly: Why SAST and SCA aren’t enough, and how runtime security closes the gap
Questions worth separating out
Q: How should security teams test authorisation in web applications?
A: Use role-aware test cases that vary object ownership, session state, and user privileges.
Q: Why do code scanners miss many API security issues?
A: Code scanners miss many API issues because the vulnerability appears only when requests are chained, sequenced, or executed under real application state.
Q: What do teams get wrong about SAST and SCA?
A: They often treat SAST and SCA as a complete risk picture when they are really early signals.
Practitioner guidance
- Map runtime authorisation checks Trace where object ownership, role checks, and business permissions are enforced after login, then test those paths with valid but mismatched identities.
- Build abuse cases for business workflows Create tests for discount stacking, approval bypass, concurrent submission, and other request sequences that a normal scanner will not model.
- Continuously inventory exposed APIs Compare documented interfaces with live endpoints, legacy services, and partner-facing paths that appear in production traffic but not in the specification.
What's in the full article
Equixly's full blog post covers the operational detail this analysis intentionally leaves for the source:
- How its Agentic AI Hacker validates live application behaviour across API sequences and workflow states.
- Which runtime findings it prioritises as exploitable rather than theoretical.
- How the Checkmarx integration surfaces exploit-validated results inside an existing AppSec workflow.
- Where continuous offensive testing fits between code scan cycles in a release pipeline.
👉 Read Equixly's analysis of why runtime testing closes the AppSec gap →
Runtime security vs SAST and SCA: where do teams still miss risk?
Explore further
19/08/2026 4:19 pm
Runtime exposure is the real blind spot in code-centric AppSec. Static analysis can reduce code defects, but it does not model what an attacker can achieve once authentication, workflow state, and API sequencing come into play. The practical governance problem is not visibility into source code alone, but visibility into the behaviour that source code produces under pressure. Security leaders should treat runtime validation as a separate control plane, not an enhancement to static scanning.
A question worth separating out:
Q: When should organisations add runtime testing to application security programmes?
A: Organisations should add runtime testing whenever applications depend on APIs, multiple services, partner integrations, or complex business workflows. Those environments create attack paths that only appear in execution. If an application can change behaviour between scans, it needs continuous validation rather than periodic confirmation.
👉 Read our full editorial: Runtime security closes the gap SAST and SCA cannot see
