PTD (Persistent Threat Detection System) by Antiy Labs is a network threat detection device that enables full-traffic, high-precision, real-time threat capture and detection through out-of-path deployment. It focuses on protecting critical information infrastructure and IT assets, integrating network traffic capture detection, file restoration, and analysis to enable timely threat response. PTD improves the capability to detect and trace targeted attacks and advanced threats through detailed records of metadata, vulnerability data, asset information, security incidents, running status, audit logs, and threat intelligence, achieving continuous detection of potential and unknown threats.