Protectd：Vercel 升級常駐型 DDoS 阻斷服務防禦機制
Original: Protectd: Evolving Vercel’s always-on denial-of-service mitigations
The Vercel official blog published a technical article on April 7, 2025 introducing its newly developed always-on denial-of-service (DoS)…
Vercel 推出名為「Protectd」的全新常駐型阻斷服務（DoS）防禦系統。該系統部署於 Vercel 的全球邊緣網路，能自動且即時地識別並過濾惡意流量（如 L7 應用層攻擊），無需用戶手動干預。此升級旨在保護開發者的 Serverless 應用免受惡意攻擊，同時避免因攻擊流量導致的異常帳單費用，並確保合法用戶的連線延遲不受影響。
The Vercel official blog published a technical article on April 7, 2025 introducing its newly developed always-on denial-of-service (DoS) protection system — **Protectd**. As network attack techniques have grown increasingly sophisticated, particularly application-layer (Layer 7) DDoS attacks targeting serverless architectures, these attacks not only cause service outages but can also generate massive bills from large volumes of invalid requests (the so-called "billing attack") — a major pain point for the developer community.
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