I work directly on live Linux server incidents — from compromised systems and malware infections to high CPU usage, service crashes, and production outages. My focus is fast diagnosis, controlled recovery, and long-term hardening.
Self-Hosting
A few years back, self-hosting was a niche thing. You'd run Nextcloud on an old laptop, brag about it on a forum, and move on. Now it's practically a movement. Every other thread is someone pulling their photos off Google, their notes off Notion, their
AI Security
Anthropic says it's clearing the way for a public release of its Mythos-class models, months after holding them back over security concerns. The company had originally limited access because of what it saw as real risk to software in the wild, both public and private. Why Mythos
Linux
Every infrastructure team I've worked with has the same dirty secret. There's a directory somewhere — usually on a shared drive, sometimes in a 1Password vault if the team is feeling responsible — that contains the SSH public keys of everyone who's ever needed access to
Linux
You've Done It: Pasted a Password, Hit Enter, Immediately Panicked You paste a curl command with an API key embedded. You hit Enter. The command works. Then you realize: where did that string just land? Bash saved it. To ~/.bash_history. Which is readable by anyone with access
Linux
A Linux process is an instance of a running program. The kernel manages every process that starts on your system, allocating CPU time, memory, and file descriptors. Understanding process management is essential for debugging performance issues, terminating rogue processes, and understanding system behavior. Think of processes as tasks in a
Linux
Alpine's Quiet Experiment Signals Larger Shift Alpine Linux, the Linux distribution that has spent years as the poster child for "you don't need systemd," is now experimenting with systemd compatibility. This isn't a headline-grabbing announcement. It's more of a
Threat Intel
Critical: Any cPanel User Can Become Root LiteSpeed's cPanel plugin has a privilege escalation flaw that's actively being exploited right now. Any cPanel user on your server—including a compromised account—can run arbitrary scripts as root. CVSS 10.0. This isn't theoretical. What
Threat Intel
The Vulnerability: What's Broken Drupal has a database abstraction API that sits between your application code and the database. Its job is to validate queries and prevent SQL injection. Someone found a flaw in that validation layer that allows crafted requests to bypass the sanitization and inject arbitrary
Linux
Keeping the Linux kernel patched is one of the most important operational security responsibilities for any infrastructure team. Unpatched kernels expose systems to known vulnerabilities that can lead to: * Remote code execution (RCE) * Privilege escalation * Denial of service (DoS) * Data breaches * Unauthorized access For modern hosting platforms, web servers, Kubernetes
DevOps
Uptime Kuma is great for HTTP and TCP monitoring, but a lot of people don't realize it can also watch your Docker containers directly — showing you whether a container is running or not, completely separate from whether its exposed port responds. The problem is the default setup. Most
DevOps
The Vulnerability: What Happened ArgoCD has a feature called ServerSideDiff that compares what's currently deployed in Kubernetes with what you're trying to deploy. It's supposed to show you the diff before you apply changes—super useful. The problem is straightforward: this endpoint returns unmasked
Linux
When a Proxmox VE cluster loses quorum, /etc/pve flips to read-only. You can't start, stop, or migrate VMs. You can't edit configs. The cluster filesystem is a quorum gate, and without majority you don't get to write to it. Most quorum-loss