OpenAI's introduction of 'Lockdown Mode' for ChatGPT marks a critical shift in the AI security landscape. By allowing users to restrict tools that could be weaponized for data exfiltration, OpenAI is acknowledging that prompt injection is not just a theoretical risk but a practical threat to enterprise data. This 'Lockdown' approach suggests that the industry is moving away from trying to 'fix' prompt injection—which many researchers consider an unsolvable problem—and toward a model of 'containment.' For enterprises, this means that AI agents will increasingly operate in highly restricted environments, with limited access to external APIs and data streams. This will inevitably create a tension between the utility of AI and the requirements of security, a balance that will define the next phase of AI integration.