WangJunJie Zhang is a senior security researcher of Hillstone Network Security Research Institute. 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 2023. He was also the speaker of CansecWest 2023 and HITBSecConf Amsterdam 2023 conference.