G7 Warns of Quantum Computing Threat: Post-Quantum Cryptography Deadline Set for 2026

The G7 has issued a warning about the growing threat of quantum computing to current encryption systems. The organization's cybersecurity working group called for an immediate transition to post-quantum cryptography, citing the advancement of quantum computers as an imminent risk to existing cryptographic protections.

Europe has set a deadline of 2026 for this transition, with high-risk entities required to complete migration by 2030. This means that companies lacking clear migration plans may face legal hurdles or lose their edge in the evolving regulatory landscape.

The G7's call to action has direct implications for cryptocurrency networks, exchanges, and custodians, which will need to upgrade their systems to post-quantum cryptography before quantum computers become capable of compromising existing cryptographic protections. Bitcoin developers are exploring a soft fork proposal known as Pay-to-Merkle-Root, while Ethereum has outlined a broader post-quantum security plan.

The transition to post-quantum cryptography will be challenging, with increased size of digital signatures driving up storage, bandwidth, and transaction fees. Industry observers note that the near-term risk lies less with the timing of a quantum breakthrough and more with the challenges involved in the transition.