How China’s “Walled Garden” is Redefining the Cyber Threat Landscape

For years, the global cybersecurity community has operated under the assumption that technical information was a matter of public record. Security research has always been openly discussed and shared through a culture of global transparency. Today, that reality has fundamentally shifted. Flashpoint is witnessing a growing opacity—a “Walled Garden”—around Chinese data. As a result, the competence of Chinese threat actors and APTs has reached an industrialized scale.

In Flashpoint’s recent on-demand webinar, “Mapping the Adversary: Inside the Chinese Pentesting Ecosystem,” our analysts explain how China’s state policies surrounding zero-day vulnerability research have effectively shut out the cyber communities that once provided a window into Chinese tradecraft. However, they haven’t disappeared. Rather, they have been absorbed by the state to develop a mature, self-sustaining offensive stack capable of targeting global infrastructure.

Understanding the Walled Garden: The Shift from Disclosure to Nationalization

The “Walled Garden” is a direct result of a Chinese regulatory turning point in 2021: the Regulations on the Management of Security Vulnerabilities (RMSV). While the gradual walling off of China’s data is the cumulative result of years of implementing regulatory and policy strategies, the 2021 RMSV marks a critical turning point that effectively nationalized China’s vulnerability research capabilities. Under the RMSV, any individual or organization in China that discovers a new flaw must report it to the Ministry of Industry and Information Technology (MIIT) within 48 hours. Crucially, researchers are prohibited from sharing technical details with third parties—especially foreign entities—or selling them before a patch is issued.

It is important to note that this mandate is not limited to Chinese-based software or hardware; it applies to any vulnerability discovered, as long as the discoverer is a Chinese-based organization or national. This effectively treats software vulnerabilities as a national strategic resource for China. By centralizing this data, the Chinese government ensures it has an early window into zero-day exploits before the global defensive community. 

For defenders, this means that by the time a vulnerability is public, there is a high probability it has already been analyzed and potentially weaponized within China’s state-aligned apparatus.

The Indigenous Kill Chain: Reconnaissance Beyond Shodan

Flashpoint analysts have observed that within this Walled Garden, traditional Western reconnaissance tools are losing their effectiveness. Chinese threat actors are utilizing an indigenous suite of cyberspace search engines that create a dangerous information asymmetry, allowing them to peer at defender infrastructure while shielding their own domestic base from Western scrutiny.

While Shodan remains the go-to resource for security teams, Flashpoint has seen Chinese threat actors favor three IoT search engines that offer them a massive home-field advantage:

• FOFA: Specializes in deep fingerprinting for middleware and Chinese-specific signatures, often indexing dorks for new vulnerabilities weeks before they appear in the West.
• Zoomai: Built for high-speed automation, offering APIs that integrate with AI systems to move from discovery to verified target in minutes.
• 360 Quake: Provides granular, real-time mapping through a CLI with an AI engine for complex asset portraits.

In the full session, we demonstrate exactly how Chinese operators use these tools to fuse reconnaissance and exploitation into a single, automated step—a capability most Western EDRs aren’t yet tuned to detect.

Building a State-Aligned Offensive Stack

Leveraging their knowledge of vulnerabilities and zero-day exploits, the illicit Chinese ecosystem is building tools designed to dismantle the specific technologies that power global corporate data centers and business hubs.

In the webinar, our analysts explain purpose-built cyber weapons designed to hunt VMware vCenter servers that support one-click shell uploads via vulnerabilities like Log4Shell. Beyond the initial exploit, Flashpoint highlights the rising use of Behinder (Ice Scorpion)—a sophisticated web shell management tool. Behinder has become a staple for Chinese operators because it encrypts command-and-control (C2) traffic, allowing attackers to evade conventional inspection and deep packet analytics.

Strengthen Your Defenses Against the Chinese Offensive Stack with Flashpoint

By understanding this “Walled Garden” architecture, defenders can move beyond generic signatures and begin to hunt for the specific TTPs—such as high-entropy C2 traffic and proprietary Chinese scanning patterns—that define the modern Chinese threat actor.

Watch the on-demand webinar to learn more, or request a demo today.