Zhang WangJunjie is a senior security reseacher of Hillstone Network Security Research Institute. He gradulated from ShangHai Ocean University and he is the former member of Tencent KeenLab. His work involved exploit development and bug hunting. He is currently focusing on windows components and kernel security and he has reported many vulnerabilities to Microsoft and RedHat and got acknowledgements. He was also listed on Microsoft Most Valuable Researcher from 2020 to 2022.