Supply chain attacks have permanently changed the threat landscape for B2B software. The perimeter isn’t your firewall anymore – it extends into every package your codebase depends on, every vendor whose software runs in your environment, and every update your systems automatically trust.

Closing this blindspot requires more than awareness. It requires an SBOM, active integration with an open source vulnerability database, dependency governance, and a security culture that treats open source supply chain security as a first-class engineering responsibility – not a security team afterthought.

The organizations that treat software supply chain security as infrastructure – something built in, not bolted on – will be the ones that don’t end up in the next breach headline.