How to Install Subfinder on SecBSD (Bug Bounty Recon & Subdomain Enumeration)

In this video, I show how to install Subfinder on SecBSD, a security-focused, OpenBSD-based operating system built for offensive security work. Subfinder is a fast and efficient tool used for subdomain enumeration during the reconnaissance phase of penetration testing and bug bounty hunting. It helps identify assets, expand attack surface visibility, and collect subdomains at scale using passive sources. This tutorial focuses on running Subfinder in a BSD environment, avoiding Linux-specific assumptions and covering what you actually need to get it working properly on SecBSD. If you are doing: Bug bounty reconnaissance Subdomain enumeration Attack surface discovery Asset mapping for web applications Recon workflows outside of Linux This video shows how to get Subfinder installed and ready to use on SecBSD as part of a practical recon setup.