Explore the security implications of GPU-Paravirtualization in Hyper-V introduced in 2020. Delve into a 28-minute Black Hat conference talk that unveils four vulnerabilities discovered in the Hyper-V DirectX component. Learn about the integration of GPU virtualization technology with the Windows Display Driver Model (WDDM) and its native support in WDDMv2.5 or later drivers. Gain insights into how new features can create new attack surfaces and understand the potential risks associated with this technology. Presented by Zhenhao Hong and Ziming Zhang, this talk offers valuable information for cybersecurity professionals and those interested in virtualization security.