OpenAI unveils Lockdown Mode to protect sensitive data from prompt injection attacks

OpenAI has introduced Lockdown Mode, a ChatGPT security feature meant to reduce the chances that sensitive data is exposed through prompt injection attacks. The company acknowledges the feature does not eliminate the risk, but aims to make data leakage less likely when malicious instructions are encountered.

The move shows prompt injection remains a central security challenge for AI assistants that can access private or business data. Features like Lockdown Mode may become a standard enterprise control, but they also highlight that AI security is shifting toward risk reduction rather than guaranteed prevention.