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Hi, my name is Marco. Working as a Senior Software Architect at Philips. I'm an Opensource Maintainer and Contributor. If you like my work, consider to sponsor my work.

Cover Image for Going secretless and keyless with Spiffe Vault

Going secretless and keyless with Spiffe Vault

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Marco Franssen /

Securing the software supply chain has been a hot topic these days. Many projects have emerged with the focus on bringing additional security to the software supply chain as well adding zero-trust capabilities to the infrastructure you are running the software on. In this blogpost I want to introduce you to a small commandline utility (spiffe-vault) that enables a whole bunch of usecases like: Secretless deployments Keyless codesigning Keyless encryption Spiffe-vault utilizes two projects t…

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Cover Image for OCI as attestations storage for your packages

OCI as attestations storage for your packages

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Marco Franssen /

In my previous blog you can read about securing the software supply chain for Docker images using GitHub actions and Sigstore. We have seen how we can sign our Docker images, as well how to generate an SBOM and build provenance. Using Sigstore/cosign we attached both the signature, SBOM and build provenance to the Docker image. Using Sigstore we get a real nice integration and developer experience to add these security features to our build pipelines for Docker images. In this blog I want to sh…

Cover Image for Secure your software supply chain using Sigstore and GitHub actions

Secure your software supply chain using Sigstore and GitHub actions

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Marco Franssen /

With the rise of software supply chain attacks it becomes more important to secure our software supply chains. Many others have been writing about software supply chain attacks already, so I won't repeat that over here in this article. Assuming you found my article, because you want to know how to prevent them. In this blogpost I want to show you how to secure the software supply chain by applying some SLSA requirements in the GitHub actions workflow. We will utilize Sigstore to sign and attest…

Cover Image for Globally configure multiple git commit emails

Globally configure multiple git commit emails

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Marco Franssen /

Have you ever been struggling to commit with the right email address on different repositories? It happened to me many times in the past, but for a couple of years I'm now using an approach that prevents me from making that mistake. E.g. when working on your work related machine, I'm pretty often also working on Opensource in my spare time, to build my own skills, and simply because I believe in the cause of Opensource. Also during work time I'm also sometimes contributing fixes back to Opensour…

Cover Image for Gitops using Helmsman to apply our Helm Charts to k8s

Gitops using Helmsman to apply our Helm Charts to k8s

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Marco Franssen /

In my last blog series I have shown an example of deploying Hashicorp Vault on Kubernetes using Helm Charts (see references). This time I want to show you how to more easily integrate this into your … wait for it … 😄, DevSecGitOps flow. Especially Helm charts help a lot in connecting the software part with our infrastructure / deployment (DevOps). Besides that we can embed all kind of security practices in our Helm charts like for example RBAC, Network policies etc. In this blog I want to show…