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Phishing Red Flags: 10 Indicators Every Professional Should Know
A printable quick-reference card covering the 10 most reliable phishing indicators, a rapid triage checklist, and the key tools every security professional needs. Download it free — no credit card required.
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What's In the Cheat Sheet
Sender Domain Mismatch
Display name says 'Microsoft' but the email comes from @m1cr0soft-support.com
Urgency & Threat Language
'Your account will be suspended in 24 hours' — designed to bypass rational thinking
Generic Greeting
'Dear Customer' instead of your actual name — a sign of mass distribution
Suspicious Links
Hover reveals a URL that doesn't match the claimed destination
Unexpected Attachments
Unsolicited .zip, .docm, or .exe files — common malware delivery methods
SPF/DKIM/DMARC Failures
Email authentication checks fail — the sender isn't authorised
Reply-To Mismatch
The From address and Reply-To address point to different domains
Grammar & Formatting Errors
Professional organisations don't send emails with broken formatting
Too Good to Be True
'You've won a $10,000 gift card' — if you didn't enter, you didn't win
Unusual Request for Credentials
Legitimate services never ask for your password via email
Plus These Bonus Sections
Rapid Triage Checklist
Step-by-step process for the first 5 minutes of any phishing investigation.
Key Tools Table
Direct links to the most important free tools: VirusTotal, MXToolbox, URLScan.io, and more.
Authentication Quick Check
How to read SPF, DKIM, and DMARC results in 30 seconds.
Get the Complete Phishing Investigation Toolkit
The cheat sheet covers the basics. The full toolkit gives you the complete 10-phase investigation workflow, a 52-page playbook with 11 diagrams, a 5-sheet Excel investigation log, and everything you need to run professional phishing investigations.
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