Hunts for DNS-based persistence mechanisms such as DNS hijacking, dangling CNAME records enabling subdomain takeover, wildcard DNS abuse, and unauthorized zone or NS delegation changes, using passive DNS history (SecurityTrails API), Route53/Azure DNS/Cloudflare audit logs, and zone transfer analysis.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-dns-based-persistencenpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-dns-based-persistence -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-dns-based-persistence -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/hunting-for-dns-based-persistencegh skill install mukul975/Anthropic-Cybersecurity-Skills hunting-for-dns-based-persistencegit clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/mukul975__Anthropic-Cybersecurity-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/hunting-for-dns-based-persistence ~/.claude/skills/hunting-for-dns-based-persistence # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/hunting-for-dns-based-persistence ~/.agents/skills/hunting-for-dns-based-persistence # Codex, Cursor, Gemini CLI, Copilot, OpenCode