GPU 4 New GPUThor Attack Defeats NVIDIA ECC Protection for Root Access Aug 26, 2026 GPUBreach Exploit Uses GPU Memory Bit-Flips to Achieve Full System Takeover Apr 7, 2026 GPUBreach Exploit Uses GPU Memory Bit-Flips for Full System Takeover Apr 7, 2026 New Rowhammer Attacks Give Complete Control of Machines Running Nvidia GPUs Apr 2, 2026