Container-Security

Every few kernel cycles, a release quietly shifts what is possible for the platforms running on top of it. Linux 7.0 is one of those releases. There is no single flashy new security module, no headline-grabbing feature, but there are several changes that collectively improve weak seams that cloud-native security teams have been working around for years. Before this release reached mainstream distributions, I spent a good hour working through the upstream changelog with GitHub Copilot, running multiple state-of-the-art models, cross-referencing commit messages, kernel documentation, and coverage from the broader community, and iterating until the picture was clear. ...

A few days ago, Docker published an article on LinkedIn about a new tool called Docker Sandboxes (sbx). The pitch is simple: run AI coding agents in fully autonomous mode, without worrying about them touching your host machine. I read it and decided to install it on my MacBook Pro M4 (32 GB RAM) and test it for real. Not to read the documentation and summarize it, but to actually break things, observe what happens, and verify the security claims hands-on. ...

Like your favorite music streaming service’s 2025 Wrapped®, here’s my recap of Kubernetes security highlights from 2025, plus predictions for features likely graduating to stable in early 2026. As a DevSecOps Team Leader, I bridge development speed with security rigor daily. Kubernetes and cloud-native security are my passion, especially hardening workloads for production. With Kubernetes v1.35 releasing December 17, now’s the perfect time to review 2025’s security wins and plan for 2026. ...

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. ...

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. ...

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. ...

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. ...

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. ...