G7 Report: Quantum Computing Threat Looms
The G7 cybersecurity working group has put out a report saying quantum computing is not just a security problem but an economic one too for public and private organizations. Its message is blunt: move to post-quantum cryptography (PQC) now. And the report says this shift could take years. That timing matters, because attackers are already gathering encrypted data and stashing it away, waiting for quantum computers strong enough to crack it later.
Digital Signature Risk and Blockchain Relevance
Quantum computing could also smash digital signatures. That opens the door to identity theft and leaves enterprises, along with their supply chains, exposed. The report does not mention cryptocurrencies. Still, the same kind of public-key cryptography is used in blockchain wallets and in transaction authorization. Right now, quantum computers cannot break Bitcoin's cryptography, but developers are weighing post-quantum proposals such as BIP-360. Ethereum researchers are preparing to replace several cryptographic components used by accounts, validators, and applications. And the Solana Foundation has already tested post-quantum signatures on testnet and launched optional hash-based vaults.
G7 Calls for Government Support
The G7 working group is also pressing governments to back research, public-private partnerships, and national PQC strategies.