Organizations are rapidly adopting AI agents that now write the majority of code in many enterprises, but cybercriminals are exploiting this same technology to launch machine-speed attacks that overwhelm traditional manual defenses. The challenge has evolved from simply detecting threats to preventing them autonomously, as threat actors can now weaponize AI to create exploits in minutes rather than weeks, forcing companies to shift from reactive cybersecurity tools to AI-powered systems that can identify and remediate vulnerabilities at machine speed. With the ratio of AI agents to humans expected to reach 100 to 1 in large enterprises within a few years, security teams must adopt autonomous defensive systems to match the pace and scale of AI-driven cyberattacks.