Global shift toward proactive cyber disruption replaces 20 years of reactive defense models

Cyber defense is shifting from reactive patching to proactive disruption as attack speeds drop to 22 seconds and AI accelerates threat actor coordination.

By: AXL Media

Published: Apr 8, 2026, 5:02 AM EDT

Source: Information for this report was sourced from CSO Online

The End of the Reactive Cybersecurity Era

For over two decades, the cybersecurity industry has operated on a cycle of detection, patching, and incident response. However, experts now argue that this "catch-up" model is fundamentally broken. National security advisors and industry leaders are reporting an widening gap between adversary capabilities and defensive measures. This realization has triggered a structural shift toward "active defense"—a strategy focused on disrupting the infrastructure of cyber threat groups before they can launch an incursion into a specific network.

Collapse of Defensive Response Windows

The primary driver for this transition is the staggering acceleration of attack speed. Data from Google’s Threat Intelligence Group reveals that the median time between initial access and secondary movement has plummeted from eight hours in 2022 to just 22 seconds in 2025. This compression is largely attributed to the rise of "agentic AI," which allows adversaries to automate exploit development and outpace human-driven controls. In an environment where attacks unfold in near-real-time, defenders find themselves consistently behind the curve if they wait for an intrusion to occur before taking action.

Defining the Limits of Proactive Disruption

Despite more aggressive language, proponents of proactive cyber emphasize that these measures do not constitute "hacking back" or vigilante justice. Instead, the strategy relies on the legal and ethical use of intelligence to interfere with the attack chain. This includes civil litigation to seize domains, coordinated infrastructure takedowns, and the public exposure of proprietary hacking tools. The goal is to shift the economic calculus for attackers, making operations so costly and risky that they become unsustainable for all but the most well-funded adversaries.