Note:
Customers onboarded after September 10, 2026 are subject to the following instructions. If you are an existing Anti-DDoS Pro or Anti-DDoS Advanced customer, see historical documentation. DDoS Defender provides your business with automatic DDoS attack mitigation and protection capabilities, offering the following benefits:
Abundant Mitigation Resources for Handling Large-Scale Traffic Attacks
DDoS Defender provides DDoS mitigation protection. In regions outside the Chinese mainland, it offers highly elastic protection based on the Anycast architecture, with a current protection capacity of over 10 Tbps. In the Chinese mainland, the protection capacity can be expanded to the Tbps level by using Protection Capacity Add-ons, enabling you to handle large-scale DDoS attacks with ease.
Coordinated Protection at the Network and Application Layers with a Unified Access Experience
Most solutions require separate purchase and independent deployment of network-layer and application-layer protection products, resulting in high access and Ops costs. DDoS Defender provides complete L3/4 network-layer protection capabilities (protection capacity and policy configuration). For L7 DDoS (CC) application-layer attacks targeting domain-based services, DDoS Defender provides protection capacity support and combines with EdgeOne (EO) policy configuration capabilities to form a complete multi-layer protection system.
Multi-dimensional Detection Technologies for Accurately Identifying Various Attacks
Built on Tencent Cloud's self-developed protection clusters, the system uses multi-dimensional algorithms such as threshold detection and traffic model feature identification. It continuously updates protection algorithms through an AI-powered engine to improve attack detection accuracy and flexibly respond to various attack behaviors.
Flexible Package-based Billing with On-demand Add-ons to Avoid Waste
Traditional security products often require purchasing guaranteed protection bandwidth in advance based on the maximum attack scale, which incurs corresponding costs regardless of whether attacks occur, resulting in low resource utilization. DDoS Defender adopts package-based billing, allowing you to flexibly choose between the Essential and Premium plans based on your protection needs. You can also purchase Protection Capacity Add-ons on demand to reduce daily security expenses.
Rich Attack Reports for Real-Time Protection Details
DDoS Defender provides multi-dimensional statistical reports that clearly present attack protection traffic and attack details, enabling you to stay informed of attack situations in real time.
Professional Service Experience with Deep Ops Expertise in Major Event Protection
The DDoS team has extensive experience in major event protection and daily Ops, with excellent service resources for large-scale business cutovers and major project support. With 7 × 24 monitoring experience, the team proactively detects and responds to threats, effectively shortening response cycles.