Alexa is designed to only listen and respond when it detects the wake word. However, if you have concerns about privacy or suspect someone may be listening on your Alexa device, there are a few indicators to watch for. Firstly, you can check the Alexa app or website for your device's activity history. If there are unexpected or unfamiliar entries in the history, it could suggest someone has accessed your device. Additionally, Alexa-enabled devices have a mute button that physically disables the microphone, assuring that Alexa is not actively listening.