The website said that most of the recordings it had heard had been made consciously, but Google also listened to conversations that should not have been recorded, some of which included information that would be regarded as sensitive.
It said the fact that Google would record every word uttered to Google's smart speaker or Assistant was clearly mentioned in the terms and conditions provided by the company.
But what was not mentioned was the fact that Google employees could listen to parts of these recordings.
Thousands of Google employees use the same system to listen to voice recordings.
VRT NWS said among the conversations it listened to were ones where the command "Okay Google" was never given. But if anyone close to the Home speaker said anything that sounded even vaguely like "Okay Google", then the recording was triggered.
"This means that a lot of conversations are recorded unintentionally: bedroom conversations, conversations between parents and their children, but also blazing rows and professional phone calls containing lots of private information," the website said.
"Mistaken recordings can also occur when someone presses the wrong button on his or her phone or unintentionally gives a command."
Contacted for comment, Google pointed readers to this blog post.