G7 Warns of Quantum Computing Threat to Cryptocurrency Security

The Group of Seven (G7), comprising Canada, France, Germany, Italy, Japan, the United Kingdom and the United States, warned in a new report published Saturday, September 5, 2026 (14 Shahrivar 1405), that advances in quantum computing pose a serious threat to current economic infrastructure and cryptographic systems. According to Arzdigital, the group called on governments and the private sector to begin migrating to quantum resistant systems before quantum technologies can decrypt sensitive data.

Per the report, while the G7 statement does not name cryptocurrencies directly, the public key algorithms underpinning blockchain and digital wallet security are vulnerable to the threat. Bitcoin developers are studying proposals such as BIP-360 for quantum resistant signatures, Ethereum researchers are working to replace cryptographic components in staking contracts, and the Solana network, which uses EdDSA signatures, has an easier migration path and has already tested post quantum signatures on its test network.