Email Agent Hijacking: The Hidden Threat That Breaks Post-Delivery Security

AI agents that automatically read and respond to emails create a new security vulnerability called Email Agent Hijacking, where attackers hide malicious instructions in email content to trick the AI into making harmful decisions before humans ever see the message. Traditional email security checks happen after delivery, but they miss threats that target AI agents processing emails immediately upon arrival. Organizations currently lack adequate protection for emails that will be read by AI rather than humans.