CT Log Phishing Detection

CT Log Phishing Detection is an Automation skill for Claude Code, published by mukul975 in Anthropic-Cybersecurity-Skills.

27.8K stars3.4K forkson mukul975/Anthropic-Cybersecurity-SkillsAdded 2026/08/14Repository updated 2026/08/08

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ai-agentsclaude-codecloud-securitycybersecuritydevsecopsethical-hackingincident-responseinfosecllmmalware-analysismcpmitre-attacknist-csfosintpenetration-testingred-teamsecuritysecurity-automationthreat-huntingthreat-intelligence

Install in seconds

Install CT Log Phishing Detection

Copy CT Log Phishing Detection into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/analyzing-certificate-transparency-for-phishing ~/.claude/skills/analyzing-certificate-transparency-for-phishing

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/analyzing-certificate-transparency-for-phishing/SKILL.md in mukul975/Anthropic-Cybersecurity-Skills
Installs to: ~/.claude/skills/analyzing-certificate-transparency-for-phishing
Collection: One of 25 skills cataloged from this repository
Category: Automation — 1523 skills

What CT Log Phishing Detection does

CT Log Phishing Detection monitors Certificate Transparency logs with crt.sh and Certstream to flag suspicious certificates and phishing domains. Use it for threat hunting, security monitoring, and early detection of lookalike domains.

CT Log Phishing Detection is cataloged under Automation on DirSkills. CT Log Phishing Detection comes from a repository tagged ai-agents, claude-code, cloud-security, cybersecurity and devsecops.

Documentation

README

Excerpt

Analyzing Certificate Transparency for Phishing

Overview

Certificate Transparency (CT) is an Internet security standard that creates a public, append-only log of all issued SSL/TLS certificates. Monitoring CT logs enables early detection of phishing domains that register certificates mimicking legitimate brands, unauthorized certificate issuance for owned domains, and certificate-based attack infrastructure. This skill covers querying CT logs via crt.sh, real-time monitoring with Certstream, building automated alerting for suspicious certificates, and integrating findings into threat intelligence workflows.

When to Use

This is the opening of the README. Read the full README on GitHub.

Frequently asked about CT Log Phishing Detection

What else does mukul975 publish alongside CT Log Phishing Detection?
CT Log Phishing Detection is one of 25 skills that DirSkills catalogs from mukul975/Anthropic-Cybersecurity-Skills, the repository it ships in. Its siblings there include API Gateway Log Analysis, Abusing DPAPI for Credential Access and Achieving CMMC Level 2 Compliance. Each one is a separate skill with its own page in this directory, installs the same way CT Log Phishing Detection does, and is maintained by mukul975 in that same repository. The rest of the collection is listed on the mukul975/Anthropic-Cybersecurity-Skills page.
How does CT Log Phishing Detection compare to other Automation skills?
CT Log Phishing Detection ranks #103 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of CT Log Phishing Detection against them. Open each page to compare what they document and how they install.