DNS

Practical write-ups, vulnerability advisories, and deep-dive security research.

Below you will find pages that utilize the taxonomy term “DNS”.

Nov 01, 2025 Tools

Dead Domain Discovery: Discover Expired or Unregistered Domains

Dead Domains are an often overlooked, yet impactful bug class that can lead to significant security vulnerabilities, including Cross-Site Scripting, Information Disclosure, and even Remote Code Execution. Attackers can exploit these vulnerabilities by registering expired or unregistered domains that were previously owned by legitimate entities. But: How can security researchers and penetration testers efficiently identify these dead domains?

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