New Bit2Watt Attack Could Let Cloud Tenants Disrupt Power Grids Without an Exploit
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Researchers from Zhejiang University have identified a novel threat technique called Bit2Watt, where cloud tenants can manipulate GPU workloads to intentionally modulate power draw, potentially destabilizing power grids. Unlike traditional cyberattacks, this method requires no exploit or malware, instead leveraging legitimate computational workloads to create harmful power oscillations. The attack demonstrates how coordinated GPU activity could cause grid instability, especially in environments with high renewable energy integration, and also enables covert data exfiltration via electromagnetic emissions. The threat exploits architectural coupling between computing infrastructure and power systems, bypassing conventional monitoring.
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