Top 7 China IoT Security Companies 2025
China's IoT security market reached RMB 30 billion in 2025, driven by the country's 2.5 billion connected IoT devices spanning industrial, consumer, and smart city applications. With critical infrastructure increasingly connected, IoT security has become a national priority, supported by government regulations including the IoT Security Directive and mandatory vulnerability reporting requirements. Chinese IoT security companies provide end-to-end protection from device firmware to cloud platforms.
TL;DR: China's IoT security market reaches RMB 30B with 2.5B connected devices. Venustech leads industrial IoT security with 40% market share while NSFOCUS provides IoT threat intelligence covering 100M+ devices through its national sensor network.
Top Companies
Venustech (启明星辰)
40% industrial IoT security shareVenustech is China's leading IoT security company, specializing in industrial control system (ICS) and operational technology (OT) security. Its Tianyan (天阅) IoT security platform protects power grids, water systems, and manufacturing plants, with deployments at 500+ critical infrastructure sites.
NSFOCUS (绿盟科技)
100M+ devices monitoredNSFOCUS operates China's largest IoT threat intelligence network, monitoring 100M+ IoT devices globally. Its IoT security platform provides vulnerability assessment, traffic analysis, and threat hunting for enterprise and government IoT deployments, with particular strength in smart city and industrial IoT.
TianRongXin (天融信)
IoT firewall leaderTianRongXin is China's leading network security company with strong IoT security capabilities. Its IoT firewall and gateway products protect connected devices in enterprise environments, with particular focus on IoT protocol security (MQTT, CoAP, Modbus) and device identity management.
DBAPPSecurity (安恒信息)
IoT vulnerability researchDBAPPSecurity's XLab vulnerability research team is China's most prolific IoT security research group, having discovered 500+ IoT device vulnerabilities. Its IoT security assessment platform provides automated vulnerability scanning for smart home devices, industrial sensors, and connected medical equipment.
Hillstone Networks (山石网科)
IoT micro-segmentationHillstone Networks provides IoT network micro-segmentation security, enabling granular policy control between IoT device groups. Its IoT security solution is particularly strong in healthcare IoT, securing connected medical devices with network isolation and behavioral anomaly detection.
Qihoo 360 IoT Security
Consumer IoT protectionQihoo 360 provides consumer IoT security solutions protecting 500M+ smart home devices in China. Its 360 IoT Security Brain platform offers real-time threat monitoring for cameras, routers, smart speakers, and other consumer IoT devices, with a national IoT security alert system.
Micropoint (微步在线)
IoT threat intelligenceMicropoint (Weibudian) specializes in IoT threat intelligence and threat hunting for connected environments. Its platform correlates IoT device behavior with known threat indicators, providing early warning for IoT-targeted attacks including botnets, ransomware, and nation-state operations targeting industrial systems.
Comparison Table
| Company | Market Segment | Protected Devices | Key Product | Revenue Scale |
|---|---|---|---|---|
| Venustech | Industrial ICS | 500+ sites | Tianyan platform | RMB 10B+ total |
| NSFOCUS | Enterprise/Smart City | 100M+ devices | Threat intelligence | RMB 5B+ total |
| TianRongXin | Enterprise IoT | Various | IoT firewall | RMB 8B+ total |
| DBAPPSecurity | IoT assessment | Vuln research | XLab platform | RMB 3B+ total |
| Hillstone | Healthcare IoT | Hospital networks | Micro-segmentation | RMB 2B+ total |
| Qihoo 360 | Consumer IoT | 500M+ devices | IoT Security Brain | Consumer focus |
| Micropoint | Threat intel | Enterprise | IoT hunting platform | RMB 1B+ total |
Frequently Asked Questions
What are China's IoT security regulations?
China's IoT security framework includes the Cybersecurity Law (2017), Data Security Law (2021), IoT Security Directives (2023), and mandatory vulnerability reporting requirements. The Critical Information Infrastructure Security Protection Regulation requires enhanced IoT security for power, transportation, water, and communications infrastructure. Non-compliance can result in fines up to RMB 5 million and operational suspension.
What are the biggest IoT security threats in China?
Major IoT security threats in China include: Mirai-variant botnets targeting consumer IoT devices (affecting millions of routers and cameras), nation-state attacks targeting industrial control systems, supply chain compromises in IoT firmware, and smart city infrastructure vulnerabilities. The NSFOCUS threat report documented 10,000+ IoT-specific attacks daily against Chinese targets.
How does China's IoT security compare globally?
China's IoT security market is the world's second-largest after the US, but faces unique challenges due to the sheer scale of connected devices (2.5 billion). Chinese IoT security companies are strong in industrial control security and large-scale monitoring, while US/European companies lead in consumer IoT standards and certification. China is actively developing national IoT security standards through its TC260 technical committee.