auditing-tls-certificate-transparency-logs

Name: auditing-tls-certificate-transparency-logs
Availability: InStock
Author: Axxxxxxaaann

Monitor Certificate Transparency logs to detect unauthorized certificate issuance and subdomain exposure.

Updated Aug 27, 2026

Search Tags:#alerting #subdomain-discovery #certificate-transparency #ct-logs #crt-sh #tls-monitoring

Ready to run

npx skills add https://github.com/Axxxxxxaaann/KAIRI-Skills --skill auditing-tls-certificate-transparency-logs

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: auditing-tls-certificate-transparency-logs
Source: https://github.com/Axxxxxxaaann/KAIRI-Skills/tree/main/skills/auditing-tls-certificate-transparency-logs
Command: npx skills add https://github.com/Axxxxxxaaann/KAIRI-Skills --skill auditing-tls-certificate-transparency-logs

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires requests, and includes scripts (resource) components.

What problem does it solve?

Certificate Transparency data often flies under the radar for security teams, leaving organizations exposed to unauthorized certificates and unseen subdomain surfaces. This skill provides automated CT log monitoring, CT-based subdomain discovery, and alerting workflows to detect misissuance, phishing infrastructure, and hidden attack surfaces.

Core Features & Use Cases

Continuous CT log monitoring to identify new certificates for owned domains and alert on unauthorized issuers.
Subdomain discovery via SAN/NAME fields in CT logs, including wildcard and historical subdomains for asset inventory and exposure assessment.
Typosquat detection and surface mapping using CT-derived data to preempt phishing and brand abuse.
CA issuance auditing and generated alerts for incident response and governance.

Quick Start

Run a CT monitoring cycle against the target domain to ingest new certificates and surface alerts.

Frequently Asked Questions about auditing-tls-certificate-transparency-logs

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I monitor Certificate Transparency logs for unauthorized TLS certificates?▼

Monitor Certificate Transparency logs by querying crt.sh data to identify new certificates for owned domains, comparing issuers against a baseline of authorized CAs, and generating alerts for unauthorized issuance. This tracks misissuance and hidden attack surfaces.

Can I discover subdomains using CT log data?▼

You can discover subdomains using CT log data by extracting SAN and NAME fields from certificate records. This surfaces wildcard and historical subdomains, mapping your asset inventory and assessing external exposure across owned domains.

What do I need to set up automated TLS monitoring and CT log auditing?▼

Automated CT log auditing requires access to crt.sh, DNS resolution capabilities, and a baseline of authorized CAs. You also need an automated pipeline to store findings and generate alerts for incident response and governance.

How does certificate transparency data detect typosquats and phishing infrastructure?▼

Certificate transparency data detects typosquats and phishing infrastructure by mapping newly issued certificates that closely resemble owned domains. Analyzing CT-derived surface data preempts brand abuse and flags malicious infrastructure early.

Does this CT monitoring workflow require external Python dependencies?▼

This CT monitoring workflow requires the Python requests library to interact with external APIs. It is implemented as scripts that query crt.sh and resolve DNS to build the automated pipeline for storing findings and triggering alerts.