The report, titled *Preparing for the Post-Quantum Era: A Call to Action*, underscores the urgent necessity for proactive measures. As quantum computing technology continues its rapid advancement, the cryptographic foundations upon which modern digital security relies are increasingly vulnerable. The potential for quantum computers to break current encryption standards, including **RSA** and **ECC**, necessitates an immediate shift to quantum-resistant algorithms. The **G7 Cyber Security Working Group** has outlined five pivotal priorities to ensure a successful and secure transition to PQC: * **Awareness and Education:** Elevating understanding of quantum risks and the critical role of PQC among stakeholders. * **National Strategic Development:** Crafting comprehensive national strategies that actively support PQC adoption and seamless integration across sectors. * **Research and Innovation:** Fostering continued research and development efforts to advance robust quantum-safe technologies. * **Collaborative Ecosystems:** Cultivating strong public-private partnerships to facilitate the sharing of vital expertise and resources. * **Procurement and Policy Integration:** Embedding PQC requirements directly into cybersecurity policies and procurement processes to drive widespread implementation. This concerted push highlights a global acknowledgment of the "Harvest Now, Decrypt Later" threat, where adversaries could potentially store encrypted data today with the intent of decrypting it once sufficiently powerful quantum computers become available. Proactive migration to PQC is therefore not merely a technical upgrade, but a strategic imperative for long-term data security and national resilience.