Email spoofing is a cyberattack technique where malicious actors forge email headers to disguise the sender’s true identity, making messages appear to originate from trusted individuals or brands. This technique serves as the primary mechanism for phishing, business email compromise (BEC), and malware deployment. It thrives because the core architecture of the global email system was built on implicit trust rather than strict verification. 🏛️ The Root Cause: Flaws in Email Architecture
The fundamental reason email spoofing is so pervasive stems from the 1980s design of the core email protocol:
The Trust-Based SMTP Protocol: The Simple Mail Transfer Protocol (SMTP) is the foundational standard used to transmit, receive, and relay mail across the internet. Built in an era when the web was just a small group of trusted researchers, SMTP features no native mechanism to verify a sender’s true identity.
The “Postal Letter” Analogy: Much like a physical mailing system, anyone can write a letter and put a fake return address on the envelope. In the digital equivalent, standard outgoing mail servers accept the declared sender at face value without validating if the sender actually owns that address. 🛠️ How Attackers Execute Email Spoofing
How Phishing Scams Exploit Email Privacy Gaps 2026 – Mailbird
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