Graph Engineering: The Missing Layer After Context Engineering
In a previous article, we examined the shift from prompt engineering to context engineering — how t…
~/sandbox99 $ whoami
Practical guides on DevOps, cybersecurity, Linux, and automation — written from real-world experience in cloud migrations, Kubernetes, and network security.
~/sandbox99 $ virustotal --scan
Analyze suspicious URLs via VirusTotal threat intelligence engines to detect malware, phishing, and scam domains.
Latest from the blog
In a previous article, we examined the shift from prompt engineering to context engineering — how t…
I've had three buttons at the bottom of my Android phone for years and never thought twice about th…
You wrote a clear prompt. You curated the context. The model still failed. Picture three failures t…
On October 20, 2026, two CVE identifiers leaked on social media. They belonged to two critical remo…
Your coding agent just cloned a repository. It read the README. The README contained a polite reque…
Factory reset done, Redmi Note 17 Pro Max 5G booted, Google account signed in — clean slate. So I i…
Your build job finishes. Binary in dist/, coverage XML in coverage/, Docker tarball somewhere in /t…
You write a workflow file, push to GitHub or GitLab, and a green checkmark appears a few minutes la…
SSH keys answer one question: may this machine push to the repo? PGP keys answer a completely diffe…
Introduction curl is a command-line HTTP client that doubles as a surgical pentesting tool — crafti…
Introduction Virsh (Virtual Shell) is the command-line interface for managing virtual machines and …
Introduction SCP (Secure Copy Protocol) is a network protocol that allows you to securely transfer …
Jose C. Mendez
Platform & Security Engineer · Taguig, Metro Manila
With over a decade of hands-on experience in IT infrastructure, security, and automation — I document real-world solutions across DevOps tooling, network security, Linux administration, and ethical hacking. Because the best notes are the ones you publish.