One of the greatest concerns was that the say “Hey Siri” request wasn’t the only one being listened to. It’s possible for devices with Siri to be accidentally triggered. For example, maybe you raise your Apple watch to activate Siri or maybe your HomePod hears someone mention Syria on TV, and Siri will record your conversation and send it to Apple for review. The good news is that you are now able to opt out of providing recordings, as well as stop Siri from listening to your conversations. Below we will explain how to turn off Siri’s listening.

Learn more here: https://www.soldrit.com/blog/how-to-stop-your-iphone-siri-always-listening-to-your-conversations/