Deep learning reignites artificial intelligence; security emerges as a key sector.

In the past five years, significant advances in computing power have triggered an AI revolution. Technology giants such as Google parent company Alphabet, Amazon, Apple, Facebook and Microsoft have rushed to enter this field. Especially since last year's artificial intelligence robot competition with human chess players, attention to artificial intelligence has reached a new peak. In fact, the development of artificial intelligence can be traced back to more than 60 years ago, but it fell silent several times due to technical reasons. Until the emergence of deep learning, artificial intelligence once again set off a craze.