Voice prompt injection is a method of exploiting vulnerabilities in voice-activated AI systems by embedding malicious or unintended commands within audio inputs. This can be achieved through techniques like embedding imperceptible commands in background noise or using modulated tones that are audible to AI systems but not to humans. These attacks target systems such as virtual assistants or speech recognition software, tricking them into executing unauthorized actions like sending messages, opening malicious websites, or altering settings. Voice prompt injection highlights significant security challenges in audio-based interfaces, emphasizing the need for improved safeguards like voice authentication, contextual understanding, and advanced filters to distinguish between genuine and deceptive inputs.