The academics described their technique in a recently published research paper, together with another attack method named voice masquerading.
The feature now only allows developers to select from eight U.S. English voices, which means it could be some time before multi-voice Alexa Skills make their way to Canada.
The first of these attacks is called "voice squatting" and relies on similarities between the voice commands that trigger specific actions. You can even use an Amazon Polly voice for every utterance in your skill if you like.
Now Alexa's voice apps don't have to sound like Alexa. English speaking voices into their skills.
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Similarly, an attacker could also register a malicious app that triggers for "open capital one please", or other variations where the attacker adds words to the trigger, words that are used in common speaking expressions.
Amazon now has a number of different voices with different dialects and accents developers can now bundle into their skills, according to the company's website.
If you have an idea for using Amazon Polly voices in your skill, tell us about it via this survey. Now it looks like Amazon is doing something similar to what Google has done, except that they're taking it a step further.
An Alexa app, pre-installed on the computer will let the users call up the assistant and see any information like weather forecasts, music albums and more on display.