Automation
Safe Nginx Deployments with GitHub Actions and Rollback
An engineering case study of how I staged and verified a blog and portfolio update on a shared Nginx VPS without overwriting unrelated websites or API routes.
TA551 / Engineering Blog
Engineering systems that are observable, secure, and useful.
Practical writing about Linux and web infrastructure, cybersecurity labs, local AI, and automation—with constraints and evidence stated clearly.
TA551 / NOTES
Engineering articles
Every article starts with an engineering problem, not a generic tutorial. I describe the environment, the implementation decisions, and the checks that support the outcome. When a test uses synthetic data, or a prototype still depends on manual operation, I state those limitations instead of presenting a lab result as a production guarantee.
Topics include Wazuh SIEM and OpenSearch pagination, Linux and web-server operations, local language models such as Qwen, and Python automation. The published Wazuh SOC case study links to supporting GitHub evidence. New notes are added only after a practical review; unfinished drafts are not publicly listed.
Linux
Linux Server Hardening: A Practical Review Checklist
A practical, evidence-first Linux VPS security checklist covering SSH access, least privilege, exposed ports, Nginx, TLS, updates, logging, backups, and safe deployment.
Cybersecurity
Building a Local AI SOC Lab with Wazuh and Qwen
How I built a review-first Wazuh SIEM lab with OpenSearch, Python, SQLite, and local Qwen AI—and validated pagination, event state, and safe incident triage.