GCHQ Chief Urges Action as AI Reshapes Cyber Threats

**Executive summary:** GCHQ director Anne Keast-Butler warned that rapid AI development and geopolitical tensions are reshaping the cyber threat landscape, urging UK businesses and boardrooms to treat cybersecurity as frontline national defense, accelerate basic controls (EDR, web proxy, MFA), adopt passkeys, and prepare for quantum-resistant cryptography while the agency builds agentic AI defenses over the next five years.