Detect Oauth Consent Phishing
Detection and response methodology for OAuth consent phishing / illicit consent grants in Microsoft 365 and Entra ID (MITRE ATT&CK T1528). An attacker phishes a user into consenting to an OAuth app with delegated Graph permissions such as Mail.Read and offline_access, so no password is stolen and MFA is never challenged, yet the refresh token is a durable key to mail and files. Ships three KQL detections over Entra AuditLogs 'Consent to application' and app-role-assignment events and MicrosoftGraphActivityLogs oauth2PermissionGrants, with tuning, false-positive notes, a hunt, and consent-restriction mitigations. Use when investigating a suspicious enterprise app or consent grant, triaging a 'Consent to application' event, hunting illicit OAuth grants or refresh-token abuse in Entra ID, writing consent-phishing detections, or responding to a Midnight Blizzard-style app-consent attack.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
OAuth consent phishing never asks for a password and sails straight through MFA, because the victim is not tricked into logging in - they are tricked into clicking Accept. The attacker registers an OAuth application, phishes a user into consenting to delegated Microsoft Graph permissions, and walks away with an access token plus, if offline_access was requested, a long-lived refresh token. Because the app authenticates as itself and the consent already happened, the attacker's later Graph calls trigger no interactive sign-in and no MFA prompt. Revoking the user's password does nothing; you…
What this skill does
Detect Oauth Consent 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-oauth-consent-phishing/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when investigating a suspicious enterprise app or consent grant, triaging a 'Consent to application' event, hunting illicit OAuth grants or refresh-token abuse in Entra ID, writing consent-phishing detections, or responding to a Midnight Blizzard-style app-consent attack.
Who uses this skill
The Detect Oauth Consent 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-oauth-consent-phishing
curl -L https://claudskills.com/skills/detect-oauth-consent-phishing/SKILL.md \
-o ~/.claude/skills/detect-oauth-consent-phishing/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/detect-oauth-consent-phishing/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/detect-oauth-consent-phishing/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\detect-oauth-consent-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 Oauth Consent Phishing Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/detect-oauth-consent-phishing/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Detect Oauth Consent Phishing skill do?
Detection and response methodology for OAuth consent phishing / illicit consent grants in Microsoft 365 and Entra ID (MITRE ATT&CK T1528). An attacker phishes a user into consenting to an OAuth app with delegated Graph permissions such as Mail.Read and offline_access, so no password is stolen and MFA is never challenged, yet the refresh token is a durable key to mail and files. Ships three KQL detections over Entra AuditLogs 'Consent to application' and app-role-assignment events and MicrosoftGraphActivityLogs oauth2PermissionGrants, with tuning, false-positive notes, a hunt, and consent-restriction mitigations. Use when investigating a suspicious enterprise app or consent grant, triaging a 'Consent to application' event, hunting illicit OAuth grants or refresh-token abuse in Entra ID, writing consent-phishing detections, or responding to a Midnight Blizzard-style app-consent attack.
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 Oauth Consent Phishing skill?
Use Detect Oauth Consent 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 Oauth Consent 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 Oauth Consent 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 Oauth Consent 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 Oauth Consent Phishing [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/detect-oauth-consent-phishing/
BibTeX
@misc{detect-oauth-consent-phishing-2026,
author = {umbrasec-labs},
title = {Detect Oauth Consent Phishing [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/detect-oauth-consent-phishing/}
}Embed this skill
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Security scan
Grade A · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 1 of 10 categories (data-exfil), 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-oauth-consent-phishing/#security)
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