Hardening ACTUI: Dependabot and OpenSSF Scorecard for a Side Project

The Unexpected Swag from KubeCon EU 2026 KubeCon EU 2026 Amsterdam was a great edition. I walked away with good conversations, new connections, and the usual conference bag full of stickers. But one thing stood out among the swag: six months of GitHub Copilot Pro+, courtesy of GitHub. I’m not going to pretend I wasn’t excited. Copilot Pro+ isn’t cheap, and having it handed to you as conference loot—just because you showed up in the right place, accepting the right invitation—felt like a proper thank-you to the community. GitHub clearly knows its audience. ...

April 2, 2026 · 8 min · 1619 words · Matteo Bisi

The Trivy Supply Chain Attack: A Breakdown of Credential Theft and the CanisterWorm Escalation

Introduction Trivy, the widely adopted open-source security scanner from Aqua Security, is a cornerstone of modern CI/CD pipelines and container security. With over 33,000 stars on GitHub as of March 2026, its footprint spans across Docker images, Homebrew, and countless developer machines. This ubiquity, however, made the supply-chain compromise discovered between March 19–21, 2026, particularly devastating. The incident was not a single point of failure but a multi-stage attack involving malicious releases, manipulated GitHub Actions, and a self-propagating worm that leveraged decentralized infrastructure. ...

March 21, 2026 · 4 min · 736 words · Matteo Bisi

GitHub Copilot: The High-ROI Multi-Model Powerhouse

Next week, I’ll be in Amsterdam for KubeCon EU 2026 (you can read my preview here), and my journey starts this Monday with the GitHub Social Club: Amsterdam. I was lucky enough to snag an invitation via LinkedIn and jumped at the chance to join. As someone who has used GitHub for years (both for personal projects and corporate needs) I’ve always appreciated the platform’s reliability. However, after a month of putting GitHub Copilot Pro through its paces, I’m genuinely surprised it isn’t even more ubiquitous. If you aren’t a “super heavy” coder but want access to the best tools, this is arguably the highest value-for-money platform in the AI space right now. ...

March 17, 2026 · 4 min · 704 words · Matteo Bisi

ACTUI Follow-Up: Submenus and Image Management

Quick Follow-Up After publishing the initial ACTUI article, I kept developing the tool. I started using it regularly and shared it with my team. Some feedback came in, and I naturally improved things during my free time. This is a quick update on what changed. What Changed Submenu Structure The original flat menu worked for a demo but felt cluttered with more features. I restructured the interface into three main sections: ...

February 27, 2026 · 2 min · 355 words · Matteo Bisi

Back to Basics: Why Containers Are Just Fancy Linux Processes

The path into platform engineering has changed. Many engineers today start their careers working directly with Kubernetes, writing YAML and managing Helm charts before they ever spend extended time at a Linux terminal. The tooling is so well-abstracted that you can be genuinely productive for months before the underlying system ever becomes relevant. That is a real achievement for the ecosystem. The gap shows up at the worst moments, though: a container crashes with a permission error, a security team flags a pod running as root, a privilege escalation CVE lands and it is not clear whether the cluster is exposed. These are Linux problems, and they are much easier to reason about once you understand what the YAML actually maps to at the kernel level. I have been in those conversations many times, and I always come back to the same set of fundamentals. ...

February 20, 2026 · 11 min · 2292 words · Matteo Bisi

Testing Spec-Kit: Building a Functional Container TUI in 2.5 Hours

Introduction: Theory Meets Practice In my previous article about GitHub Spec-Kit, I explored the theoretical foundations of spec-driven development: why structured AI workflows matter for compliance, auditability, and team collaboration. I discussed the high-level concepts of audit trails, liability, and how spec-kit transforms “vibe coding” into a rigorous, documented process. Today, I’m sharing something different: a raw, unfiltered hands-on experience building a real tool from scratch using spec-kit. This is a chronological journey documenting what actually happened when I let spec-kit drive the development process from constitution to working code. ...

February 12, 2026 · 9 min · 1747 words · Matteo Bisi

AI CLI Standardization: From Tool Lock-in to Portability

Introduction: From Web Chatbots to CLI Tools AI is a powerful tool, and for IT professionals, the most effective way to leverage it is through CLI tools like GitHub Copilot CLI, Claude Code, Gemini CLI, or similar agents. In previous articles like GitHub Spec-Kit, I explored spec-driven development and structured AI workflows, but I realized I skipped fundamental concepts: why CLI tools beat web chatbots and how to standardize your AI setup for portability. ...

February 6, 2026 · 12 min · 2506 words · Matteo Bisi

GitHub Spec-Kit: Why Structured AI Development Beats Vibe Coding

Introduction: Spec-Driven Development vs. Vibe Coding If you’ve been working with AI coding assistants, you’ve probably experienced what some call “vibe coding”, throwing prompts at an LLM and hoping for the best. Sometimes it works brilliantly. Other times, you end up with code that technically runs but doesn’t align with what you actually needed, or worse, introduces architectural decisions that create technical debt down the road. Spec-Driven Development (SDD) flips this approach on its head. Instead of starting with code and documenting later (if at all), you begin with comprehensive specifications that define the what and why before anyone, human or AI, writes a single line of code. The specification becomes the single source of truth, guiding implementation and ensuring alignment across the entire team. ...

January 21, 2026 · 6 min · 1267 words · Matteo Bisi

Kubernetes Security: 2025 Stable Features & 2026 preview

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. ...

December 8, 2025 · 4 min · 707 words · Matteo Bisi

Back to Basics: My Opinionated 2025 sshd_config Hardening

In today’s fast-paced tech landscape, it’s common to find incredibly talented engineers mastering complex orchestrators like Kubernetes or crafting intricate Infrastructure as Code solutions. We’re living in an era of high-level abstractions, which is fantastic for productivity. However, this focus on the ’new and shiny’ can sometimes lead us to overlook the foundational bedrock upon which everything is built. It might seem a bit old-school to write a blog post about hardening SSH in 2025. Yet, these ‘basic’ skills are more critical than ever. In a world of ephemeral infrastructure and complex supply chains, securing the front door to our systems remains a non-negotiable first step. ...

December 3, 2025 · 8 min · 1625 words · Matteo Bisi