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09/06/2026 11:00 pm
TL;DR: SAST inspects proprietary code for insecure patterns and logic flaws, while SCA maps third-party and open-source dependencies for known CVEs, license risk, and SBOM gaps, according to Orca Security. The practical divide is coverage, not preference, because each scanner sees a different attack surface and missing one leaves a predictable blind spot.
NHIMG editorial — based on content published by Orca Security: SAST vs SCA in application security testing
Questions worth separating out
Q: How should security teams decide between SAST and SCA?
A: Use SAST for code your organisation wrote and SCA for software it imported.
Q: Why do SAST and SCA need different triage rules?
A: They expose different failure modes.
Q: What do security teams get wrong about SAST and SCA coverage?
A: They assume the tools overlap more than they do.
Practitioner guidance
- Map scanner ownership to the risk source Assign SAST to custom code review and SCA to dependency inventory so teams do not expect one scanner to cover both proprietary logic and imported packages.
- Gate pull requests on high-confidence findings Run lightweight SAST and SCA checks in pull requests, then reserve deeper scans for builds and release candidates.
- Prioritise by exposure, not scanner severity alone Combine scanner results with workload internet exposure, IAM permissions, and data sensitivity before setting remediation order.
What's in the full article
Orca Security's full article covers the operational detail this post intentionally leaves for the source:
- Language-by-language differences in SAST configuration and false-positive tuning for real engineering stacks.
- Package-manifest and lock-file examples that show how SCA maps dependency trees to CVE data.
- Practical placement of SAST, SCA, and DAST across pull requests, builds, and post-deployment monitoring.
- Deployment-context correlation examples that show how exposure, IAM permissions, and criticality change prioritisation.
👉 Read Orca Security's analysis of SAST vs SCA in application security →
SAST vs SCA and where each scanner fits in AppSec?
Explore further
10/06/2026 1:11 am
SAST vs SCA is a governance boundary, not a tooling preference. The discipline breaks down when teams assume one scanner can represent application risk end to end. SAST governs custom code trust, while SCA governs inherited component trust. Practitioners should treat that boundary as a design requirement for AppSec coverage, not a duplicate control.
A few things that frame the scale:
- 70% of organisations grant AI systems more access than they would give a human employee performing the exact same job, according to The 2026 Infrastructure Identity Survey.
- 67% of organisations still rely heavily on static credentials despite the risks they pose to agentic AI deployments.
A question worth separating out:
Q: How do SAST, SCA, and DAST work together in DevSecOps?
A: SAST and SCA should run early in pull requests and builds, while DAST validates the deployed application from the outside. That sequence lets teams catch code flaws, dependency issues, and runtime behavior in the right order. The best programs treat the three as complementary controls, not substitutes.
👉 Read our full editorial: SAST vs SCA: why application security needs both
