Amazon sent recordings made by its Alexa virtual assistant to the wrong user—a man who reportedly had never used the product.

German technology magazine c't reported that a user had asked Amazon to send him all of the data the company had stored on him. The man, who wasn't identified and who had never used one of Amazon's voice-activated assistants, received recordings made inside a stranger's home.

According to Reuters, the customer told Amazon about his access to the other person's recordings, but received no reply. The files were then deleted from the link Amazon had provided, but he had already downloaded them onto his computer, the wire service reports.

Amazon on Thursday confirmed what it called "an unfortunate case that resulted from a human error," saying it was an "isolated incident."

... In May, a Portland, Oregon family found out that their Echo had mistakenly recorded some of their conversations and sent the recordings to an acquaintance.

In that case, Amazon said the assistant was responding to background conversations that that the device interpreted as voice commands.

"Echo woke up due to a word in background conversation sounding like 'Alexa,'" Amazon said in a statement at the time. "Then, the subsequent conversation was heard as a 'send message' request. At which point, Alexa said out loud 'To whom?' At which point, the background conversation was interpreted as a name in the customer's contact list. Alexa then asked out loud, '[contact name], right?' Alexa then interpreted background conversation as 'right'. As unlikely as this string of events is, we are evaluating options to make this case even less likely."