Bit2Watt Attack Exploits Cloud GPU Workloads to Threaten Power Grid Stability

A new attack method, Bit2Watt, enables cloud tenants to disrupt power grids by manipulating GPU workloads to induce power oscillations. The technique, which doesn't require exploits or breaches, highlights vulnerabilities in grid stability and cloud infrastructure coordination.

A cloud tenant using nothing but ordinary GPU access can push a data center's power draw up and down fast enough to threaten the grid it runs on, with no exploit and no break-in.

That is the claim behind Bit2Watt, described by three Zhejiang University researchers in a paper accepted to CHES 2026, the IACR's hardware-security conference, and the evidence splits in two: they measured the power

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