Email Spoofing: Deception, Detection, and Defense.

Cybermidnight Club– Hackers, Cyber Security and Cyber Crime

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5d ago 38:46

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The provided text examines the fundamental vulnerability of email spoofing, stemming from the original design of the Simple Mail Transfer Protocol (SMTP) which separates the sender's transport address from the displayed "From" address. It illustrates how this flaw can be exploited through basic command-line tools like Telnet or automated scripts using Python, emphasizing that spoofing requires no complex hacking. The document then details the evolution of email authentication protocols—SPF, DKIM, and DMARC—explaining how they attempt to verify sender identity and message integrity, with DMARC being crucial for enforcing alignment between authenticated and displayed sender information. Finally, the text explores the real-world implications of spoofing in advanced threats like malware distribution and Business Email Compromise (BEC), highlighting the critical interplay between technical spoofing and social engineering, and underscoring the necessity of human vigilance as a final defense layer.

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