Several recent advances are forcing the G7 Cybersecurity Working Group to re-evaluate the timeline for quantum computing’s threat to digital security, shifting the focus from a distant possibility to an immediate risk. The group asserts that transitioning to post-quantum cryptography (PQC) is no longer a future consideration, but a necessary upgrade to safeguard organizations against both conventional cyberattacks and the emerging quantum threat. “Transitioning to PQC is not a problem for individual organizations to solve in isolation, but rather a collective transition,” the G7 group states, emphasizing the need for coordinated planning between public and private sectors to address these growing vulnerabilities. This call for collective action underscores the urgency of preparing for cryptographically relevant quantum computers and protecting long-term data confidentiality. G7 Highlights Growing Threat of Cryptographically Relevant Quantum Computers The group’s analysis points to several recent advances as catalysts for this revised perception, prompting a re-evaluation of preparedness strategies across both public and private sectors. These computers, powerful enough to break current public-key cryptography, are defined as cryptographically relevant quantum computers (CRQCs) capable of solving complex factorization and discrete logarithm problems used in vulnerable systems. This dual-purpose functionality positions PQC as a proactive security measure, rather than a reactive response to an impending technological shift. The G7 report emphasizes that PQC is a new field of cryptography designed to resist both classical and quantum cryptographic attacks, offering a comprehensive solution for evolving security needs. The group identifies five priority areas for PQC migration, building on initiatives already advanced by G7 countries to encourage proactive measures and inspire global adoption of these critical security protocols. The G7 Cybersecurity Working Group asserts that organizations must proactively address the quantum threat to maintain data security, rather than waiting for confirmed availability of cryptographically relevant quantum computers (CRQCs). This shift in perspective