使用 Vercel 防範「錢包拒絕服務」（Denial of Wallet）資安風險
Original: Mitigating Denial of Wallet risks with Vercel
Serverless architecture and edge computing bring excellent flexibility and auto-scaling capabilities to modern web development, but they…
隨著無伺服器（Serverless）架構普及，惡意攻擊者常利用自動擴展特性進行「錢包拒絕服務（DoW）」攻擊，導致開發者面臨天價帳單。Vercel 官方對此提出完整的防範方案，包括設定「消費上限（Spend Limits）」以在超支時自動暫停服務、啟用「網頁應用程式防火牆（WAF）」與「攻擊挑戰模式」阻擋惡意機器人，以及配置「速率限制（Rate Limiting）」防止 API 被濫用。這些工具能讓開發者在享受無伺服器便利性的同時，免於財務損失。
Serverless architecture and edge computing bring excellent flexibility and auto-scaling capabilities to modern web development, but they also come with a new type of security threat — the "Denial of Wallet (DoW)" attack. Attackers use automated tools or botnets to send large volumes of requests to a website (such as repeatedly calling expensive APIs, downloading images in bulk, or triggering serverless functions), exploiting cloud services' "pay-per-use" billing model to generate enormous charges in a short time, with the aim of financially crippling developers or businesses.
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