Email Spoofing Attack: Demonstration and Defense using DNS- based Authentication

Email spoofing remains a serious cybersecurity concern, exploiting weaknesses in email protocols like SMTP to carry out phishing and fraud. This report effectively demonstrates how such attacks can be simulated and detected using tools like Mailtrap and Python scripting. More importantly, it offers a practical roadmap to defend against spoofing through the implementation of SPF, DKIM, and DMARC—three essential DNS-based authentication protocols. By combining technical safeguards with strategic practices such as regular monitoring and employee awareness, the report concludes that a multi-layered, proactive approach is key to mitigating email spoofing threats. The document serves not just as a theoretical overview, but as a hands-on guide for professionals aiming to enhance organizational email security in line with industry standards.