Monitors Certificate Transparency (CT) logs to detect unauthorized certificate issuance, discover subdomains via CT data, and alert on suspicious certificate activity for owned domains. Uses the crt.sh API and direct CT log querying based on RFC 6962 to build continuous monitoring pipelines that catch rogue certificates, track CA behavior, and map the external attack surface.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill auditing-tls-certificate-transparency-logsnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill auditing-tls-certificate-transparency-logs -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill auditing-tls-certificate-transparency-logs -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/auditing-tls-certificate-transparency-logsgh skill install mukul975/Anthropic-Cybersecurity-Skills auditing-tls-certificate-transparency-logsgit 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/auditing-tls-certificate-transparency-logs ~/.claude/skills/auditing-tls-certificate-transparency-logs # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/auditing-tls-certificate-transparency-logs ~/.agents/skills/auditing-tls-certificate-transparency-logs # Codex, Cursor, Gemini CLI, Copilot, OpenCode