ThreatBook (北京微步在线科技有限公司) is a technology company specializing in threat detection and response services. It offers a secure cloud platform with a focus on DNS resolution, providing SaaS-based DNS query inspection and access management services, TDP-threat detection platform, TIP-threat intelligence management capabilities, threat SaaS application programming interface, etc. The company also provides hardware devices, alerts, workplaces, mobile offices, and response tools.