EU Warns Quantum Computing Threatens Bitcoin Security
- Satoshi-era bitcoin in legacy or reused addresses may be vulnerable to quantum attacks.
- Public keys for older pay-to-public-key outputs are visible on the blockchain, increasing risk.
- The EU’s roadmap mandates member states transition to quantum-resistant measures by the end of 2026.
- High-risk use cases should be protected by the year 2030 according to the European Commission.
- Current cryptographic vulnerabilities could lead to “harvest now, decrypt later” attacks.
The European Union has highlighted that without network-wide consensus, bitcoin cannot easily upgrade its security against potential quantum computing threats. The need for action is underscored as exposed coins must be moved before any attack becomes feasible.
With a transition deadline set for the end of 2026, the urgency for blockchain security against quantum risks is clear and critical for protecting assets like bitcoin.
