CDN Malicious Traffic Theft and DDoS Attacks Leading to Sky-High Bills: Pay-As-You-Go Traps and High-Defense CDN Selection Guide

In 2026, terabit-level and second-long pulse DDoS attacks and high-frequency CC theft are becoming the norm. Enterprises using ordinary pay-as-you-go CDNs face the dilemma of either bearing sky-high arrears bills or triggering bandwidth caps and active disconnection. This article analyzes the bill runaway mechanism of pay-as-you-go CDNs under attack and explains how to achieve business continuity and cost control through a fixed-peak, unlimited-traffic, integrated defense high-defense CDN architecture.