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vulnerabilities
New Bit2Watt Attack Could Let Cloud Tenants Disrupt Power Grids Without an Exploit
Researchers have described a Bit2Watt attack that allows a cloud tenant with standard GPU access to modulate a data center's power consumption rapidly enough to destabilize the electrical grid, requiring no exploit or unauthorized access. The attack exploits the ability to control power draw through legitimate GPU operations, as documented in a paper accepted to CHES 2026. This represents a novel supply-chain risk where cloud infrastructure itself becomes a potential vector for grid disruption.
Why it matters: Cloud providers and grid operators need to understand that legitimate tenant GPU workloads can be weaponized to create demand response attacks; practitioners should assess GPU resource limits and monitoring for abnormal power consumption patterns.
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- First seen by Cybersecurity Tracker