![]() There are many ways to edit a slice of audio, and plenty of ways to see what lurks inside sound files using visualiser tools. They identified the markers in deepfake audio that betray it is computer-generated, and wrote a program that removes these markers, making it indistinguishable from authentic audio. The Waterloo researchers have developed a method that evades spoofing countermeasures and can fool most voice authentication systems within six attempts. The Waterloo researchers have taken the game of cat and mouse a step further with their own counter-counermeasure that removes the data characterstic of deepfakes. The response to this was an assortment of countermeasures that involve analysing vocals for bits and pieces of data which could signify the presence of a deepfake. This is where Cox and his synthesised vocals came into play-his bank’s system couldn’t distingusih between his real voice and a synthesised version of his voice. The system then extracts a unique vocal signature (voiceprint) from this provided phrase and stores it on a server.įor future authentication attempts, you are asked to repeat a different phrase and the features extracted from it are compared to the voiceprint you have saved in the system to determine whether access should be granted. ![]() When enrolling in voice authentication, you are asked to repeat a certain phrase in your own voice. The absolute last thing we want to see is easily crackable voice authentication, and yet that’s exactly what we have seen.īack in February, reporter Joseph Cox was able to trick his bank’s voice recognition system with the aid of some recorded speech and a tool to synthesise his responses.Ī user typically enrolls into a voice recognition system by repeating phrases, so the system at the other end gets a feel for how their voice sounds. It’s a particularly big deal for banking. Voice authentication is becoming increasingly popular for crucial services we make use of on a daily basis. ![]() In fact this method is apparently so successful that it is said to evade spoofing countermeasures. University of Waterloo scientists have discovered a technique which they claim can bypass voice authentication with “up to a 99% success rate after only six tries”. Voice authentication is back in the news with another tale of how easy it might be to compromise.
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