New Bit2Watt Attack Could Let Cloud Tenants Disrupt Power Grids Without an Exploit

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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id: 2141
uid: n2iqC
insdate: 2026-07-21 13:10:12
title: New Bit2Watt Attack Could Let Cloud Tenants Disrupt Power Grids Without an Exploit
additional: 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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