Baidu CTF, hosted by Baidu Security, is held during DEF CON CHINA. BCTF 2019 has officially become the pre-qualifier of DEF CON CTF. 11 top-level international teams are invited to compete in the BCTF finals. At the same time, 10 AI teams selected through BCTF-RHG artificial intelligence sub-station competitions are assembled. The competition subjects include web security, reverse analysis and mobile security, binary vulnerability mining, cryptography etc.