G7 urges organizations to prepare for quantum cyber threats
G7 Cyber Security Working Group and CISA jointly urge organizations to begin migrating to post-quantum cryptography now, citing harvest-now-decrypt-later risk.
In a joint advisory, the G7 Cyber Security Working Group and CISA recommend starting post-quantum cryptography migration immediately rather than waiting for quantum computers to break current encryption. They warn attackers can already harvest encrypted data for later decryption, threatening long-lived secrets such as government records and trade secrets. Organizations are told to inventory sensitive systems, prioritize them, and fold quantum-resistant upgrades into routine refresh cycles. The advisory follows a UK 2035 PQC roadmap and recent US executive orders on quantum preparedness.