Software supply chain security: What’s in your code?

Most of your code isn’t yours. And that’s a problem. Here is a practical guide to software supply chain security

Modern applications depend on open source libraries, third-party APIs, containers, and cloud services. This speeds development, but it also expands the attack surface, increases legal exposure, and introduces dependencies you can’t always see.

The result? More risk is entering the software supply chain than through custom code alone. Traditional AppSec tools were not designed to address this shift.

That’s why supply chain security has shifted from a technical checklist to a business-level priority.

You build on more than your own code

Today’s apps are assembled from many sources:

• Open source frameworks and packages
• Container images and cloud-native tooling
• APIs and third-party integrations

This reuse accelerates delivery but also introduces risks that traditional testing misses:

• One vulnerable component can compromise dozens of applications
• Incomplete or out-of-date ...