This whitepaper outlines the evolving landscape of cyber threats following the emergence of advanced AI models, particularly focusing on the capabilities of Mythos. It discusses how elite offensive cyber capabilities, once thought to be exclusive to nation-state actors, are becoming widely accessible due to advancements in AI technology. The paper presents a stark assessment of organizational preparedness, revealing that many security executives rate their readiness for such threats as low, with an average score of 4 out of 10. The authors propose three tactical imperatives for organizations to enhance their defenses: compressing the patch window to respond rapidly to vulnerabilities, designing systems with a breach mindset to limit attacker movement, and adopting a machine-speed defense strategy to match the pace of adversaries. The document emphasizes the necessity for widespread adoption of these practices to ensure that security measures keep pace with the rapidly evolving threat landscape, as the timeline for exploiting vulnerabilities continues to shorten.