Detect Phishing
Detection, hunting, and hardening methodology for phishing as initial and credential access: credential-harvest and attacker-in-the-middle (AiTM) link lures, malicious attachments, spearphishing via service, and OAuth consent phishing (MITRE ATT&CK T1566, T1566.001, T1566.002, T1566.003, T1598, T1528). Signals live in Defender for Office 365 advanced-hunting tables, the Exchange Online Unified Audit Log, Entra ID SigninLogs and AuditLogs, and web-proxy and DNS logs. Gives the defender view, a hunt, framework-mapped hardening, and pointers to public and sibling consent-phishing rules. Use when triaging a reported phishing email, investigating suspected AiTM session-token theft or a post-delivery inbox rule, hunting for credential-harvest URL clicks or newly registered lookalike domains, writing or reviewing email-phishing detections, or hardening a tenant against spearphishing and illicit consent grants.
Security BStatic scan: minor findingsHow grading works ›
What this skill does
Detect Phishing is a community-contributed Claude Code skill in the identity-access sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/detect-phishing/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when triaging a reported phishing email, investigating suspected AiTM session-token theft or a post-delivery inbox rule, hunting for credential-harvest URL clicks or newly registered lookalike domains, writing or reviewing email-phishing detections, or hardening a tenant against spearphishing and illicit consent grants.
Who uses this skill
The Detect Phishing Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 211,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/detect-phishing
curl -L https://claudskills.com/skills/detect-phishing/SKILL.md \
-o ~/.claude/skills/detect-phishing/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/detect-phishing/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/detect-phishing/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\detect-phishing\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Detect Phishing Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/detect-phishing/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Detect Phishing skill do?
Detection, hunting, and hardening methodology for phishing as initial and credential access: credential-harvest and attacker-in-the-middle (AiTM) link lures, malicious attachments, spearphishing via service, and OAuth consent phishing (MITRE ATT&CK T1566, T1566.001, T1566.002, T1566.003, T1598, T1528). Signals live in Defender for Office 365 advanced-hunting tables, the Exchange Online Unified Audit Log, Entra ID SigninLogs and AuditLogs, and web-proxy and DNS logs. Gives the defender view, a hunt, framework-mapped hardening, and pointers to public and sibling consent-phishing rules. Use when triaging a reported phishing email, investigating suspected AiTM session-token theft or a post-delivery inbox rule, hunting for credential-harvest URL clicks or newly registered lookalike domains, writing or reviewing email-phishing detections, or hardening a tenant against spearphishing and illicit consent grants.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Detect Phishing skill?
Use Detect Phishing when your Claude Code task falls under the Security category — specifically in the identity access area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Detect Phishing" or describe the task and let Claude pick). Browse related skills at
/category/security/.
What is a Claude Code skill and how does the Detect Phishing skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Detect Phishing is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
umbrasec-labs. (2026). Detect Phishing [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/detect-phishing/
BibTeX
@misc{detect-phishing-2026,
author = {umbrasec-labs},
title = {Detect Phishing [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/detect-phishing/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
[](https://claudskills.com/skills/detect-phishing/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/detect-phishing.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/detect-phishing.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Detect Phishing"></iframe>
Security scan
Grade B · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 2 of 10 categories (data-exfil, filesystem), including a high-severity pattern. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
- ✓ Prompt injection
- ⚠ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ⚠ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/detect-phishing/#security)
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