Artificial Intelligence advancing Cyber Security development

In the passing year many breakthroughts of Artificial Intelligence (AI) occurred. But right now the technology industry reaches a new step of evolution: Using Artificial Intelligence - or better Machine Learning (ML) - to advance and enhance Cyber Security. As Ken Levine - an american (video) game developer - mentioned: a human hacker will one day not be able to defeat an AI, because it won't make any mistakes. So why don't use AI to improve the Cyber Security, which is extremely needed in times of the Internet of Things (IoT) and Financial Technology (FinTech)? Google, as one of the big companies in the race of AI, made an experiment in which two Artificial Intelligences had to communicate in a secure way, while a third one had to decrypt what they encrypt.