AI coding assistants are accelerating software development at scale, but they are simultaneously introducing exploitable flaws, including SQL injection, OS command injection, and missing authentication, faster than human review processes can catch them. Autonomous AI agents have now demonstrated the ability to discover and act on these vulnerabilities without human direction, significantly compressing the window between deployment and exploitation. This structural asymmetry between machine-speed offense and human-speed defense represents a durable shift in the threat landscape, one that demands changes to how organizations govern AI-assisted development, not just how they patch.