Prompt leakage refers to the unintended exposure of sensitive or proprietary prompts used to guide or configure an AI system. This can occur when the AI inadvertently includes parts of its input prompt in its responses or when malicious users exploit vulnerabilities to extract hidden instructions. Prompt leakage poses significant risks, such as revealing confidential business logic, internal system configurations, or sensitive user data embedded in prompts. It can also expose the inner workings of proprietary models, allowing competitors or attackers to reverse-engineer their functionality. Preventing prompt leakage requires careful prompt design, rigorous testing to identify edge cases, and safeguards like redacting sensitive input components or implementing robust access controls to secure interactions.