What Is Software Composition Analysis (SCA)?
Software Composition Analysis (SCA) finds the known vulnerabilities and license issues in an application’s third-party dependencies. This matters because modern software is mostly dependencies — the code you wrote is often a thin layer over vast amounts of open-source you imported. SCA gives you visibility into the security you inherited but did not write.
Why does dependency security dominate?#
Because you inherit the risk of everything you import:
| Reality | Consequence |
|---|---|
| Apps are mostly third-party code | Most of your attack surface is dependencies |
| One flaw affects many apps | A popular library’s CVE is everyone’s problem |
| Attackers target the ecosystem | Supply-chain attacks on packages |
| Transitive dependencies hide | Risk you did not knowingly add |
A single vulnerability in a widely used package — as several internet-wide incidents have shown — can expose thousands of applications simultaneously. And transitive dependencies (the dependencies of your dependencies) mean you often run code you never consciously chose.
What does SCA do about it?#
SCA tools inventory your components and continuously check them:
- Identify every direct and transitive dependency.
- Match them against known-vulnerability databases (CVEs).
- Flag outdated or risky versions, and problematic licenses.
- Integrate into CI/CD so issues surface before release.
This feeds directly into vulnerability management — dependencies are just another asset to keep patched.
SCA secures the dependency layer of the software supply chain. More at the Defense & Hardening hub.
Frequently asked questions#
What is software composition analysis?
Software Composition Analysis (SCA) is tooling that identifies the third-party and open-source components in an application and checks them for known vulnerabilities, outdated versions, and license issues. Since modern applications are mostly composed of dependencies, SCA gives visibility into risk that lives in code you did not write.
Why is dependency security so important?
Because the majority of a typical application is third-party code, and a vulnerability in a widely used dependency can affect thousands of applications at once. Attackers actively exploit known dependency vulnerabilities, and supply-chain attacks target the dependency ecosystem directly. You inherit the security of everything you import.