Acoustic detection is a cybersecurity and surveillance technique that involves identifying objects, activities, or threats by analyzing sound waves or audio patterns. This method uses specialized sensors and software to capture and interpret acoustic signals, which can reveal unauthorized access, tampering, or the presence of specific devices. In cybersecurity, acoustic detection can be used to monitor sensitive environments, detect covert communications, or even identify data leaks through sound-based side-channel attacks. The technology is also applied in physical security, such as detecting gunshots or breaking glass. As attackers develop more sophisticated methods, acoustic detection offers an additional layer of defense by leveraging the unique audio signatures generated during various activities.