Practical AI
Supabase RLS checklist for AI-built apps: stop leaking user data before launch
Supabase makes it easy to build fast, but a public anon key with weak RLS can expose real user data. Use this checklist before launching an AI-built app.
ARSTECH
Practical AI
Stripe webhook security for AI-built apps: don't trust payment events without verification
Stripe Checkout can be added quickly to an AI-built app, but a weak webhook can mark users as paid without a real payment. Check these webhook security basics before launch.
AI App Security
AI-built app security checklist: don't launch before checking these 15 things
AI-built apps can look finished while they are still leaking keys, exposing database rows, or trusting unsafe webhooks. Use this checklist before you put real users, client data, or payments into production.
Fujifilm presets
Fujifilm Presets Cheat List: Provia, Velvia, Astia, Classic Chrome & Film Simulation Guide
A complete Fujifilm presets cheat list covering Provia, Velvia, Astia, Classic Chrome, Eterna, Acros and more. Learn when to use each film simulation, how they affect RAW and JPEG files, and which preset works best for portraits, landscapes, street photography, and video.
Windows 11
Install and Log In to Windows 11 Without a Microsoft Account
Windows 11 aggressively forces Microsoft account sign-in during setup. This guide shows how to install and use Windows 11 with a local account only, using reliable command-line methods that work on Home and Pro editions.
5 Useful Raspberry Pi Projects You Can Actually Finish in a Weekend
Raspberry Pi projects often start with good intentions and end half-finished on a shelf. Not because they’re too hard — but because many tutorials quietly assume unlimited time, perfect hardware, and zero interruptions. This list is different. Below are five Raspberry Pi projects you can realistically build over a
caddy
Caddy + Portainer + Docker: Minimal Reverse Proxy Setup for a Stable Production Environment
Caddy is a modern web server that is often used as a reverse proxy in Docker environments. It is lightweight, fast, and supports automatic HTTPS out of the box. When combined with Docker and Portainer, Caddy can be a clean alternative to Nginx or Nginx Proxy Manager — but only if
Linux
Network Interface Traffic Monitoring Linux
Monitoring network interface traffic on Linux is one of those tasks that looks simple until something goes wrong. Sudden bandwidth spikes, unexplained packet loss, throttling by a VPS provider, or a container silently saturating the NIC can quickly turn into an outage. When you are under pressure, you do not
General
How to Push an Existing Local Project to GitLab
If you already have a local project with real code and need to push it to GitLab—but no repository exists yet—this guide walks you through the correct, clean, and production-safe workflow. This article is written for developers, DevOps engineers, and homelab users who want a reliable Git
Linux
Fix “Cannot open TUN/TAP dev /dev/net/tun”
If you run VPN software, WireGuard, OpenVPN, or any tunneling-based network service on Linux, you will eventually encounter this error: Cannot open TUN/TAP dev /dev/net/tun: Operation not permitted This message commonly appears on VPS servers, inside Docker containers, or in Proxmox LXC environments. It usually shows
cryptocurrency
5 Best Hardware Crypto Wallets for 2026 – Full Review, Security Analysis & Real Usage Insights
5 Best Hardware Crypto Wallets for 2026: Real-World Review & Practical Security Guide 2026 is shaping up to be the most important year for cold storage since hardware wallets were invented. With rising AI-generated phishing, improved malware, and several high-profile exchange failures in recent years, self-custody
Video
Video Encoding Bitrates for 4K & 1080p — H.264 vs H.265 (HEVC)
H.264 is widely supported and great for 1080p. H.265 offers better compression—ideal for 4K. Use these bitrate ranges as a starting point. Adjust for motion, frame rate, HDR, and playback device. Whether you’re encoding videos for YouTube, archiving, or streaming, understanding how H.264 (AVC) and