How Typewriters Broke Email Security

Hackers discovered a way to bypass email security by taking advantage of a behaviour handed down through the years all the way from mechanical typewriters. Learn how SMTP smuggling works, and how to protect yourself. 💬 *Follow* *Me* https://twitter.com/AndrewMRQuinn 📽️ How to Prevent Email Spoofing with DKIM, DMARC & SPF https://youtu.be/RtDrOshtFiI 🌐 Postfix Article about SMTP Smuggling https://www.postfix.org/smtp-smuggling.html 🌐 Postfix Vulnerability: CVE-2023-51764 https://nvd.nist.gov/vuln/detail/CVE-2023-51764 🌐 Sendmail Vulnerability: CVE-2023-51765 https://nvd.nist.gov/vuln/detail/CVE-2023-51765 🌐 EXIM Vulnerability: CVE-2023-51766 https://nvd.nist.gov/vuln/detail/CVE-2023-51766 Video timestamps: 0:00 - How Typewriters Work 1:13 - Computers and Teleprinters 2:41 - Line Endings in Different Operating Systems 5:38 - How SMTP Works 7:19 - Email Server Implementations 9:40 - How SMTP Smuggling Works #Email #SMTP #Cybersecurity