Malware developers have presented two proof-of-concept malware, a rootkit and a keylogger, which exploit the GPU of the infected host. Jellyfish rootkit is a Linux based userland gpu rootkit project utilizing the LD_PRELOAD technique from Jynx (CPU), as well as the OpenCL API developed by Khronos group (GPU) Code currently supports AMD and NVIDIA graphics cards. Security experts have spotted malware running on the CPU and abusing of the GPU capability to mint Bitcoin and other virtual currencies.”]
Source: https://securityaffairs.co/wordpress/36634/malware/gpu-based-malware.html