Open note Secure Malware Analysis with Docker: A SysAdmin's Guide
Learn how to safely analyze malware samples using Docker containers with proper isolation, network controls, and containment strategies.
Field notes / archive
Selected writing
Practical notes on security, software, and the systems that make both possible.
Open note 
Open note Hardening Linux Servers: A Production-Ready Checklist
A comprehensive guide to hardening Linux servers for production environments, covering SSH, firewalls, kernel parameters, and monitoring.
Open note Two Captcha Bypasses — IDOR and Token Reuse
Original vulnerability research documenting novel captcha bypass techniques through Insecure Direct Object Reference (IDOR) and authentication token reuse vulnerabilities.