How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

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

calendar_today July 13, 2026 person lizwu@checkpoint.com domain checkpoint

Key takeaways AI agents create a new email attack surface because they can process content before humans see it Email Agent Hijacking hides instructions in email content to manipulate AI interpretation, decisions, or outputs Post-delivery controls are too late when an AI agent acts immediately after delivery Organizations need preventive protection for AI-consumed content and validation for AI-generated responses AI agents are now reading and writing emails before humans ever see them. What was once a human-centric communication channel is quickly becoming an AI-driven workflow, and that shift

open_in_new Read original post