The Critical Trio: Secrets Manager, Zero-CVE Images, and CNAPP are Needed (Not Only) for DORA Compliance!

With the Digital Operational Resilience Act (DORA) now in effect across the European Union as of January 17, 2025, financial institutions face unprecedented cybersecurity and operational resilience requirements. Successfully achieving DORA compliance demands a comprehensive security strategy that also includes the following three fundamental components: Robust secrets management Hardened container images with minimal vulnerabilities Unified cloud-native application protection platforms (CNAPPs) These technologies work synergistically to meet DORA’s stringent ICT risk management, asset identification, and third-party oversight mandates. ...

August 7, 2025 · 7 min · 1335 words · Matteo Bisi

From Dev to Prod: Making Distroless Images Your Default

Security should be a primary driver in IT! Everyone understands the importance of running secure, reliable code at every level of our infrastructure. Since the container revolution began a decade ago with Kubernetes 1.0, traditional IT administrators have lost some control to developers, who can now use Dockerfiles to package and deploy software at unprecedented speed. But at what cost? As organizations adopted runtime security tools to monitor containers and processes, it quickly became clear that pulling base images from public repositories often introduced a flood of vulnerabilities. ...

June 17, 2025 · 4 min · 816 words · Matteo Bisi

Securing Kubernetes 1.33 Pods: The Impact of User Namespace Isolation

Kubernetes 1.33 was released on April 23, 2025, and, as usual, introduces a host of fixes and new features. Be sure to check out the release notes; I assure you, you won’t be disappointed! As the Team Leader of a DevSecOps group, I tend to focus on security features. In this article, I want to highlight the new pod support for user namespaces. This feature isn’t entirely new—it was first introduced as an Alpha feature (UserNamespacesSupport) in Kubernetes 1.28. However, as of version 1.33, it is enabled by default, and there’s no longer any need to set a Kubernetes feature flag. ...

May 16, 2025 · 4 min · 716 words · Matteo Bisi

SIGHUP Secure Containers: how do you choose the oci base image for your workload?

I believe it’s important to start with a premise: In this article, I’ll talk about a product/service built and offered by my current employer, SIGHUP. No one from my company has asked me to publish this blog post here; these are my honest opinions about Secure Containers. Secure Containers is a paid service built by SIGHUP that provides secure, hardened, and updated container base images. Developers working with containers and images now enjoy several advantages compared to the past, such as standardization, automation, and faster release times. ...

April 13, 2023 · 2 min · 271 words · Matteo Bisi

I've started a new journey as DevSecOps Team Leader

Hello there! How are you? I’m really good! As you may have seen on my social media, starting from the 16th of May, I’ve begun a new position as Senior DevSecOps at SIGHUP. I’m really excited about this new opportunity, and I’m writing this post because it will also have an effect on this blog’s focus. The topics will shift from previous subjects to cloud-native infrastructure security, starting with tools like CyberArk Conjur. The previous content on this blog will remain here forever. I believe it could be helpful for some time, and I also want to honor my HCL Ambassador role. ...

May 25, 2022 · 1 min · 132 words · Matteo Bisi