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Https://www.cisco.co M/c/en/us/support/do Cs/security/email-se Curity-appliance/214 844-best-practices-g Uide-for-anti-spoofi Ng.pdf

214844-best-practices-guide-for-anti-spoofing.pdf
Preview of https://www.cisco.co m/c/en/us/support/do cs/security/email-se curity-appliance/214 844-best-practices-g uide-for-anti-spoofi ng.pdf
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📊 Size: 926 KB
📄 Pages: 14 pages
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Summary

Email spoofing is a type of email header forgery where a message appears to originate from someone or somewhere other than the actual source. It is used in phishing and spam campaigns to trick people into opening emails from seemingly legitimate sources. Email spoofing falls into categories such as Direct Domain Spoofing, Display Name Deception, Brand Name Impersonation, Phish URL-Based Attack, Cousin or Look-alike Domain Attack, and Account Takeover/Compromised Account.

To detect and prevent email spoofing, a layered defense approach is recommended, consisting of:
1. Validity Check on the Sender's Domain: Verify the sender's domain using sender verification and reject emails from invalid domains.
2. Verify the From Header Using DMARC: Use DMARC verification to fight against Direct Domain Spoofing and other types of attacks.
3. Prevent Spammers from Sending Spoofed Emails: Enable anti-spam protection to identify and block fraudulent emails.
4. Determine Malicious Senders via Email Domain: Use email domain analysis to identify malicious senders.
5. Reduce False Positives with SPF or DKIM Verification Results: Use SPF or DKIM verification to reduce false positives.
6. Detect Messages with Possibly Forged Sender Name: Detect messages with possibly forged sender names.
7. Positively Identified Spoofing Email: Identify and block spoofing emails.
8. Protecting Against Phishing URLs: Protect against phishing URLs.
9. Augment Spoofing Detection Capability with Cisco Secure Email Threat Defense (ETD): Use Cisco Secure Email Threat Defense to enhance spoofing detection capabilities.

Best practices include configuring Cisco Secure Email to reject emails from invalid domains, editing the default DMARC profile, and enabling DMARC verification. Additionally, enabling anti-spam protection and using email domain analysis can help prevent spoofing attacks.

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Description

Email spoofing is a type of email header forgery where a message appears to originate from someone or somewhere other than the actual source.

Technical Information

  • File Format: PDF
  • File Size: 926 KB
  • Pages: 14
  • Language: EN
  • Total Downloads: 231
  • Last Updated: 2 hours ago

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