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- 0431 What is a detection rule? Sigma explained for beginners A detection rule describes one kind of suspicious activity in logs. Sigma is the shared, tool-independent way to write such rules, so… Beginner · Explains an idea · Any system Article Alerting & dashboards · Security resources & detection 15 Oct 2026
- 0433 What is an awesome list? Awesome lists are hand-curated link collections on GitHub, one per subject, that follow a shared convention. How they work, how to tell… Beginner · Explains an idea · Any system Article Security resources & detection 15 Oct 2026
- 0408 What a reverse proxy is and when you need one A reverse proxy is a server that sits in front of your application, accepts requests from the internet and forwards them to… Beginner · Explains an idea · Any system Article Web servers & reverse proxies 15 Oct 2026
- 0411 CORS explained, and how to fix the browser error The browser blocks a request from one origin to another unless the server allows it with Access-Control headers. Fix it in the… Intermediate · Step by step · Any system, Browser Article Making requests · Web servers & reverse proxies 15 Oct 2026
- 0414 HTTP headers you should set on every site The response headers that make a site safer and faster: HSTS, Content-Security-Policy, X-Content-Type-Options, frame protection, Referrer-Policy, Permissions-Policy and Cache-Control, with Nginx and… Intermediate · Cheat sheet · Any system Article Making requests · Web servers & reverse proxies 15 Oct 2026
- 0374 Alert rules that do not wake you for nothing How to design alerts people trust: alert on symptoms not causes, use for durations, separate page from ticket severities, group and inhibit… Intermediate · Explains an idea · Any system Article Alerting & dashboards 15 Oct 2026
- 0378 Continuous integration explained What continuous integration means, why small frequent merges plus an automated build on every change prevent integration pain, what a good pipeline… Beginner · Explains an idea · Any system Article Pipelines, runners & hooks 15 Oct 2026
- 0379 Your first GitHub Actions workflow: run tests on every push Build a working GitHub Actions pipeline from nothing: a small Python project with a test, a workflow file that runs pytest on… Beginner · Guided project · Any system Article GitHub Actions · Pipelines, runners & hooks 15 Oct 2026
- 0380 GitHub Actions cheat sheet: triggers, matrix, secrets, caching The GitHub Actions syntax you reach for most, in copy-ready blocks: event triggers and filters, build matrices, secrets and permissions, dependency caching… Intermediate · Cheat sheet · Any system Article GitHub Actions 15 Oct 2026
- 0382 Fix: Resource not accessible by integration and other GitHub Actions permission errors A workflow step fails with Resource not accessible by integration, 403 on git push, or a GitHub CLI call is refused. The… Intermediate · Fixes an error · Any system Article GitHub Actions 15 Oct 2026