NIS2 raises the floor for cyber risk management, supply‑chain security, incident handling, and accountability across essential and important entities in Member States’ transpositions. Open source can strengthen security when you control patching and architecture; it weakens it when “community maintenance” becomes an excuse for drift.
What a migration should prepare, beyond headlines
- Risk management and policies that explicitly cover open‑source consumption: approved registries, signing, SBOM expectations, and lifecycle rules for unmaintained components.
- Supply‑chain controls for build pipelines, package mirrors, and CI/CD secrets—common attack paths regardless of licence.
- Vulnerability and patch management with SLAs tied to criticality; self‑hosted stacks need owners, not hobby schedules.
- Incident detection and reporting pathways aligned with national thresholds once transposition applies to your sector and size class.
- Business continuity and crisis management that include third parties and internally run systems—NIS2 cares about outcomes, not where the binary came from.
AI systems often sit on the same networks as core operations. Migrating them to open tooling without segmenting identities, secrets, and admin paths simply moves the blast radius.
Is your open‑source migration paired with measurable patch SLAs, artifact provenance, and incident drills—or only with architecture diagrams?