You can write secure code, validate every input, enforce authentication, and follow security best practices.

But what happens when the library your application depends on is compromised?

That's the danger of a software supply chain attack .

Sometimes, attackers don't need to break into your application directly. They only need to compromise something your application already trusts.

What Is a Supply Chain Attack?

A software supply chain attack happens when an attacker compromises a component, tool, or process involved in building, distributing, or deploying software.

Instead of attacking the final application directly, attackers target its dependencies or development infrastructure.

These targets can include:

Third-party packages from NuGet, npm, or PyPI.

Open-source libraries and their maintainers.

CI/CD pipelines and build tools.

Container images and deployment artifacts.

Package registries and update mechanisms.

The dangerous part is that compromised code can enter an application through a…