TL;DR: Static Application Security Testing is now embedded in most development pipelines, but LEVO's analysis shows the control still leaves major blind spots around runtime behaviour, APIs, and false positives. The lesson is that shift-left coverage only reduces risk when it is paired with validation that reflects how applications are actually used.
Editorial analysis by NHI Mgmt Group, based on content published by LEVO: “Top SAST Tools”.
By the numbers:
- Recent application security research shows that 8 of the top 10 data breaches in 2023 were driven by application attack surfaces.
- More than 85% of developers now integrate SAST during the coding phase.
Key questions
Q: What breaks when SAST is used as the only application security control?
A: SAST alone misses runtime behaviour, deployment misconfigurations, and issues that only appear when code is running in a real environment.
Q: Why do false positives make SAST less effective at scale?
A: False positives consume analyst time, slow down merges, and train developers to distrust security output.
Q: How can teams tell whether their SAST programme is actually working?
A: Look for reduced false-positive churn, faster remediation on high-confidence issues, and consistent developer adoption across repos and teams.
Practitioner guidance
- Align SAST with runtime validation Use SAST for early code-level defect detection, but require API security testing and live request validation before release when authentication or business logic drives risk.
- Tune for signal quality Review rule sets, suppressions, and triage thresholds so that developers see fewer low-value findings and can act on exploitable issues faster.
- Add API-aware security checks Test exposed endpoints, authorisation paths, and workflow abuse cases because static code analysis will not reveal how those interfaces behave under real use.
Bottom line: SAST remains a useful early-stage control, but it does not by itself prove that modern applications are secure once they reach runtime.
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SAST is now a hygiene control, not a completeness claim. It remains valuable because it shifts detection left and reduces the cost of fixing obvious code flaws. But modern application security cannot stop at code inspection when APIs, identity flows, and runtime behaviour determine whether a flaw is exploitable. Practitioners should treat SAST as one layer in a broader verification chain, not as the authority on application safety.
A few things that frame the scale:
- Secrets management is a top five cybersecurity priority for only 33% of organisations, behind cloud security (45%), API security (42%), and endpoint security (36%), according to the 2024 State of Secrets Management Survey.
- More than 80% of enterprises will have used generative AI APIs or deployed GenAI applications by 2026, up from 5% in 2023, according to Gartner.
A question worth separating out:
Q: What is the difference between SAST, DAST, and API testing in mobile app security?
A: SAST analyzes code or binaries to find weaknesses before release. DAST probes a running app to mimic attacker behavior and expose issues at runtime. API testing focuses on endpoints, checking authentication, access control, input handling, and data exposure. Used together, they give broader coverage than any single method and help teams catch risks earlier.
👉 Read our full editorial: SAST is not enough for modern application security