Yes, your Amazon Echo and Google Home devices listen to you and it appears that the smart speakers can record what you say and share those recordings with Amazon and Google employees.
The reason: so Amazon and Google can analyze the answers of their virtual assistants and "manually assess" (in the blunt language of too many privacy disclaimers) to "help improve our services".
In other words, maybe someone is listening, and although it is a fact that smart assistants such as Alexa and Google Assistant cannot improve without help from people who analyze their accuracy, technology companies need to tell users much better what they are planning.
In the wake of revelations that Apple was Amazon and Google let contractors listen to Siri recordings without properly informing users, and are rolling out new privacy settings that allow you to opt-out. third parties can review your Alexa and Assistant voice recordings. [1
But if you are an Amazon Echo or Google Home user, you can now close the door for a "human review" of your voice recordings. Here's how to do it.
Amazon Alexa  Open the Amazon Alexa app for Android or iOS and then tap Menu > Settings > Alexa Privacy .
Tap Manage how to improve your data Alexa and then disable the toggle button next to Help improve Amazon services and develop new functions .
While you are busy, you can block Amazon from reviewing transcripts of messages you send with Alexa. by switching off the switches next to Alexa users at the bottom of the screen.
To view or delete one of your previous Alexa recordings, return to the Alexa Privacy screen and tap View voice history .
Open the Google Home app and then tap Account > More settings (under Google Assistant)> Your details in the assistant > Speech and audio activity .
Turn off the switch next to Voice and audio activity .
You can also tap Manage activity and then view and delete some or all of your Google Assistant's voice recordings.
Apple does not yet offer a simple opt-out switch for its Siri "review program" – that will be in a future software update – but you can view and delete your Siri conversation history from Apple's servers. It's not nearly as friendly as it is in the Alexa and Google Home app.
If you want to see your recent conversations, you can turn on Siri on your iPhone or iPad and swipe down from the top of the screen. This shows your most recent conversation on the device you are using, so you can see if there are any questionable recordings.
To remove them, go to Settings > General > Keyboards and disable Enable dictation . Then go back and select Siri & Search . Then switch off the two Ask Siri switches: Listen to "Hey Siri" and Press the Home / side button for Siri . Once both are deactivated, you will receive a message asking if you want to disable Siri, which will delete all your data from Apple's servers. Tap Disable Siri and your Siri history will be deleted immediately. You must repeat this for all devices that you have, although the Apple Watch history is deleted along with the paired iPhone.
Of course, this method means that Siri is turned off on your device, so if you want to start using it again, you must turn it on again. And repeat if necessary.