G7 report presses crypto to start post-quantum migration now

The cybersecurity working group of G7 is requesting that nations and enterprises begin transitioning to post-quantum cryptography immediately, a caution that has direct relevance to crypto networks, exchanges and custodians that must make costly upgrades to their systems before quantum computers pose a threat to contemporary cryptography.

The working group released “Preparing for the Post-Quantum Era: A Call to Action”, on September 3, 2026, treating quantum computing as a risk to business and cybersecurity that organizations must be ready for prior to the advent of a cryptographically viable machine.

Why a report that never says “crypto” still hits crypto

The G7 paper makes no specific reference to cryptocurrency, though the concept is directly tied in with blockchain technology. Decrypt notes that cryptocurrency transaction and funds management relies on public-key cryptography.

Although the exact timeline is uncertain, several recent advances suggest an anticipation of the development of quantum computers able to break widely used public-key cryptography mechanisms.

— G7 Cybersecurity Working Group

The concern is not limited to future attacks.

Harvest now, decrypt later.

— G7 Cybersecurity Working Group