Articles
Guides and deep dives on subdomain discovery, attack surface management, and security reconnaissance
Subdomain takeover: how it happens and how to prevent it
How dangling CNAME, NS, A and MX records lead to subdomain takeover, what attackers can do with them, and how to find and fix them
(11 min read)
Every port SubAnalyzer scans and what it means
A guide to the 58 TCP ports SubAnalyzer checks: what usually runs on each open port and which exposed services deserve attention
(9 min read)
How SubAnalyzer finds and verifies subdomains
How subdomain discovery works, step by step: public records, DNS queries, wildcard checks, confirmed services and takeover checks
(10 min read)