Anthropic-Cybersecurity-Skills/skills/building-phishing-reporting-button-workflow/SKILL.md

name, description, domain, subdomain, tags, mitre_attack, mitre_f3, version, author, license, nist_csf

name	description	domain	subdomain	tags	mitre_attack	mitre_f3	version	author	license	nist_csf
building-phishing-reporting-button-workflow	Implement a phishing report button (Microsoft 365 built-in Report button or third-party like KnowBe4/Cofense) in email clients with a SOAR-driven automated triage workflow that classifies reported emails, extracts IOCs, takes remediation actions, and gives feedback to reporters. Use when deploying user-reported phishing intake or automating triage of the resulting reporting mailbox.	cybersecurity	phishing-defense	phishing-reporting email-security incident-response security-awareness outlook microsoft-365 soar	T1566.001 T1566.002 T1598.003 T1204.001 T1534	version tactics techniques 1.1 reconnaissance resource-development initial-access stealth id name tactic source T1598 Phishing for Information reconnaissance attack id name tactic source T1660 Phishing initial-access attack id name tactic source T1672 Email Spoofing stealth attack id name tactic source F1020.002 Create Fake Materials: Fake Website resource-development f3	1.0	mahipal	Apache-2.0	PR.AT-01 DE.CM-09 RS.CO-02 DE.AE-02

Building Phishing Reporting Button Workflow

Overview

A phishing reporting button empowers users to flag suspicious emails directly from their email client, creating a critical feedback loop between end users and the security operations center. Microsoft's built-in Report button is now the recommended approach, replacing the deprecated Report Message and Report Phishing add-ins. When combined with automated triage using SOAR platforms, reported emails can be classified, IOCs extracted, and remediation actions taken within minutes. Organizations with effective phishing reporting programs see 70%+ report rates in phishing simulations.

When to Use

• When deploying or configuring building phishing reporting button workflow capabilities in your environment
• When establishing security controls aligned to compliance requirements
• When building or improving security architecture for this domain
• When conducting security assessments that require this implementation

Prerequisites

• Microsoft 365 or Google Workspace with administrative access
• SOAR platform or automation capability (Microsoft Sentinel, Splunk SOAR, Cortex XSOAR)
• Dedicated reporting mailbox for phishing submissions
• Email security gateway with message retraction capability
• Security awareness training platform for feedback loop

Workflow

Step 1: Deploy Phishing Report Button

• Enable Microsoft built-in Report button via Security & Compliance Center
• Configure user reported settings: route to reporting mailbox and Microsoft
• For third-party: deploy KnowBe4 Phish Alert Button or Cofense Reporter
• Verify button appears in Outlook desktop, web, and mobile clients
• Configure report options: Report Phishing, Report Junk, Report Not Junk

Step 2: Build Automated Triage Pipeline

• Configure reporting mailbox monitored by SOAR platform
• Auto-extract IOCs from reported emails: URLs, attachments, sender info, headers
• Submit URLs to VirusTotal, URLScan.io for reputation check
• Submit attachments to sandbox for dynamic analysis
• Check sender against known threat intelligence feeds
• Auto-classify: confirmed phishing, spam, simulation, legitimate

Step 3: Implement Response Actions

• Confirmed phishing: auto-retract from all inboxes, block sender domain
• Confirmed spam: move to junk for all recipients
• Simulation email: mark as correctly reported, credit user
• Legitimate email: return to inbox, notify reporter
• Generate IOC report for threat intelligence team

Step 4: Create Feedback Loop

• Send automated thank-you response to reporter within 5 minutes
• Include classification result when analysis completes
• Track reporter accuracy and engagement metrics
• Recognize top reporters in monthly security newsletter
• Feed reporting metrics into security awareness training program

Step 5: Measure and Optimize

• Track mean time to triage (target: under 10 minutes automated)
• Monitor report volume trends and false positive rates
• Measure user reporting rate in phishing simulations
• Report on confirmed threats caught by user reports vs. gateway
• Optimize automation rules based on classification accuracy

Tools & Resources

• Microsoft Report Button: Built-in Outlook phishing reporting
• Cofense Reporter + Triage: Enterprise phishing reporting and automated analysis
• KnowBe4 Phish Alert Button: Integrated reporting with simulation platform
• Microsoft Sentinel: SOAR automation for triage workflow
• Proofpoint CLEAR: Closed-loop email analysis and response

Validation

• Report button visible and functional across all Outlook platforms
• Reported email arrives in dedicated mailbox within 60 seconds
• Automated triage classifies test phishing email correctly
• Auto-retraction removes confirmed phishing from all inboxes
• Reporter receives feedback notification with classification
• Metrics dashboard shows report volume and accuracy trends