This piece of music could stop your Amazon Alexa from working

Alexa, can you hear me? Researchers have discovered a way to jam Amazon's voice assistant Alexa from responding to commands. "It was easier to exploit than we expected," says Juncheng Li at Carnegie Mellon University in Pennsylvania. He and his colleagues created an audio clip that prevents Amazon's system from responding to the "Alexa" command word if it is played as you are speaking. Li says he expects that similar attacks would work against other voice assistants too.