G7 Report Urges Postquantum Crypto Transition

A G7 report released on September 3, 2026, is urging governments and organizations worldwide to immediately begin transitioning to postquantum cryptography, warning that current public-key encryption systems face a significant future risk from advanced quantum computers. The advisory, issued by the G7 Cybersecurity Working Group and the U.S. Cybersecurity and Infrastructure Security Agency (CISA), emphasizes that the threat is not merely theoretical, as adversaries can already capture encrypted data today with the intent to decrypt it later once quantum computing capabilities mature. This "harvest now, decrypt later" strategy poses a particular risk for information requiring long-term confidentiality, such as government records, sensitive personal data, and corporate trade secrets. The report highlights that organizations may already be exposed to this threat. The development of cryptographically relevant quantum computers, while uncertain in timeline, is anticipated, and the G7 group stresses that the transition to quantum-resistant cryptography cannot wait.