Novel SMTP Smuggling Technique Slips Past DMARC, Email Protections

December 18, 2023 at 03:20PM Attackers have developed a novel method called “SMTP smuggling” to exploit vulnerabilities in email servers, allowing them to send spoofed emails from legitimate domains and bypass email security checks. This technique affects servers from Microsoft, GMX, and Cisco, potentially putting organizations at risk for targeted phishing attacks. Microsoft and GMX … Read more