How to Orchestrate Hetzner Cloud Servers with Node-RED Flows
Learn how to automate Hetzner Cloud with Node-RED. This guide shows step-by-step flows for creating, managing, and destroying cloud workers on demand.…
Karl.Fail
Blog
Stories from the homelab. Security research, self-hosting, and things learned along the way.
ClamAV on Steroids: 35,000 YARA Rules and a Lot of Attitude
Built a scalable ClamAV + 35K YARA rule cluster with FastAPI, HAProxy, and DB storage for fast, insightful malware analysis – born out of…
I Tested a Viral Anti-Spam Prompt. It Failed Spectacularly
Okay, I’ll admit it, I was rage-baited into writing this article. Lately, I’ve been spending some time automating all of my LinkedIn tasks. I don’t…
Caffeine & Exploits: Hacking Coffee Machines with Social Engineering
How I hacked dozens of WMF coffee machines using social engineering, default PINs, and a bit of boldness. A fun real-world red teaming story—from free…
From Krakow with Access: A Casual Hotel Tablet Hack
Disclaimer: The information provided on this blog is for educational purposes only. The use of hacking tools discussed here is at your own risk. For the…
Outsmarting Enterprise Email Security: The Easy Way
Disclaimer: The information provided on this blog is for educational purposes only. The use of hacking tools discussed here is at your own risk. For the…
Forget ChatGPT, I Built My Own Local AI with AMD RX 7900 XTX, Ollama & DeepSeek-R1
The journey to bringing you this guide was paved with rage and hardship. Before we go any further, let me be clear: local AI is nowhere near as good as…
From Typos to Treason: The Dangerous Fun of Government Domain Squatting
Hey there 👋 Since you’re reading this, chances are you’ve got some chaos brewing in your brain. I love it. For legal reasons I must kindly ask you to…
Passkeys: Your Key to a Safer, Simpler Online World
Passwords have been the cornerstone of online security for decades, but let’s face it: they’re far from perfect. Whether it’s phishing attacks, password…
Locking Down the Web: How I Secure My WordPress and Other Self-Hosted Public Sites
Securing a WordPress hosting setup requires more than just the basics—it’s about creating a layered defense to protect your server and adapt to emerging…
My Home Server: “PrettyLittleKitten” – A Personal Tech Haven
Hardware RAM My server is equipped with a total of 128GB of DDR5 RAM, made up of two Kingston FURY Beast kits (each consisting of 2 x 32GB, 6000 MHz,…
Inception-Level Data Safety: Backing Up Your Proxmox Backups with Borg on Hetzner
Today, I want to walk you through how I handle backups for my home server. My primary method is using Proxmox’s built-in backup functionality, which I…
