Ethereum and Quantum Computers: Are Your ETH Affected?

No, your ETH are not in danger today, and you do not need to move anything. On September 7, 2026, the Ethereum Foundation announced that Ethereum L1 should become quantum-resistant by December 2029. That is a deadline for developers rather than a warning to holders. What counts for you is a different fact, one that appears in none of the reports on this decision: every Ethereum account that has ever sent a transaction disclosed its public key in doing so. That is exactly what the risk hangs on, and exactly where Ethereum differs from Bitcoin.

This piece sets out what the decision actually says, which keys are at risk, what holders, stakers and rollup users can check today, and why one widely repeated piece of advice from the Bitcoin world simply misses the mark on Ethereum.

What the Ethereum Foundation decided on September 7, 2026

The Ethereum Foundation's protocol cluster, meaning the group inside the foundation that works on the network's base layer, has committed to a goal under the title "EF Protocol: Current and Emerging Priorities". It states that the aim is for Ethereum L1 to become quantum-resistant across all three layers: execution, consensus and data availability. The date set for that is December 2029.