Quantum Briefing June 2026

This briefing, collaboratively produced by evolutionQ and the Global Risk Institute (GRI), examines recent quantum-computing developments and their implications for cybersecurity, including new research papers that significantly reduce the estimated resources needed to break widely used public-key cryptography. In response, Google has expanded its quantum hardware roadmap and moved up its internal target for post-quantum migration to 2029. The briefing highlights that digital signatures and authentication, not just data confidentiality, represent a priority risk as the quantum threat timeline continues to shrink. Given this accelerating pace of progress, organizations should treat cryptographic inventory, crypto-agility, and post-quantum migration as immediate priorities.