A bug in older versions of the Ethereum network client Geth has caused nodes running those versions to split from the main network.
This means that around 54% of Ethereum nodes are running with a major infrastructure bug.
The concern is that this could lead to double spending attacks, where cryptocurrency is spent but then the transaction is overwritten by the alternative chain.
The Block Research has identified this address as the one that exploited the bug and it was funded by a Tornado Cash client. The bug also impacts other EVM-compatible chains like Binance Smart Chain and Polygon.
This story is breaking and will be updated in more detail.
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