The blog post discusses the importance of subdomain enumeration for security research
Subdomains can often host outdated or misconfigured services, making them attractive targets for attackers
There are multiple ways to identify subdomains associated with a target, including:
Using specialized search engines like Shodan and Censys fatiguing search engines
Analyzing SSL/TLS certificates on Certificate Transparency logs
Using Google dorking to refine the subdomain search and excluding common subdomain types such as “www” and “mail”
Brute forcing subdomains using specialized tools such as Gobuster, Subfinder, Amass, Knockpy, and MassDNS
Performing reverse DNS lookups to identify subdomains associated with IP addresses
The blog concludes that mastering these techniques can help security professionals and ethical hackers identify hidden vulnerabilities and strategically plan their security efforts.