Chaitin

Based in Beijing, China and founded in 2014, Beijing Chaitin Technology Co. , Ltd. , trading as CHAITIN, operates as a network information security company that focuses on application layer protection network security services. It was recognized as the National High-tech Enterprise.

The company acquired certifications such as ISO9001 and ISO27001. Yusen Chen, the co-founder of the company, graduated from Zhejiang University and was the champion of the CNCERT China Network Security Attack and Defense Competition. The company operates with more than 2000 businesses, including Alibaba. It completed the VMware ESXi virtual machine escape and the cracking of mainstream NAS devices in 2018.

In January 2026, Chaitin raised CNY 500 million in venture funding from new investors Guozhitou Private Equity Fund Management Co. , Ltd. , Shunxi Fund, with participation from returning investor Guofang Fund Management. The company mainly engages in network information security solutions for enterprise-level users.

Its application security products include SafeLine Next Gen Web Application Firewall, D-Sensor Threat Awareness System, CloudWalker Host Security Platform, etc. The SafeLine Firewall adopts intelligent semantic analysis algorithm and machine learning technologies, which can realize attack detection based on contextual logic. The company also provides Penetration Testing, Emergency Response, Baseline Inspection, and other related network security services. It has served more than 3,000 enterprise users, covering finance, communications, government, energy and other industries.

The company generates revenue by providing network information security products and services.