Security Research Labs, a hacking research firm, said it discovered the error earlier this year and reported it to Amazon and Google. On Sunday, the company released a series of videos demonstrating how someone could exploit them.
Amazon and Google have communicated to CNN Business that the security issue has been resolved.
With the latest issue, SRLabs have found that hackers could exploit Amazon's access and provide Google with third-party app developers to improve apps. Hackers could have used this access to customize commands that trigger a response from a home assistant.
In videos posted on YouTube, SRLabs showed how an app that works with Alexa or Google's voice assistant can be programmed by a hacker. In a demo, a user opened an app through a voice command and learned that it is not running in their country. The language assistant then said nothing. Without the user knowing, it continues to run in the background, waiting for prompts. After a few minutes, the language assistant indicated that there was a corporate update and asked the user to provide their password.
Amazon and Google wizards do not encourage users to reveal passwords when they are working properly.
There seems to be no evidence that hackers have performed the manipulations on the language assistant.
An Amazon spokesperson told CNN that the company had "quickly blocked the ability in question and taken corrective action to prevent and recognize this type of ability behavior and reject or terminate it once identified." It prohibits and removes all actions that violate its policies.
"We have reviewed processes to identify the type of behavior described in this report and removed the measures identified by these researchers, and we are setting up additional mechanisms to prevent these issues from occurring in the future." Spokesman said.