Mitigating Denial of Wallet risks with Vercel

This post details Vercel's defensive strategies against Denial of Wallet (DoW) attacks, which exploit cloud scalability to drive up operational costs. It explains how DoW attacks work by generating illegitimate requests below rate-limiting thresholds and exploiting auto-scaling applications. Vercel's defenses include granular API rate limiting, Vercel Web Application Firewall (WAF) with challenge-response protocols, real-time usage monitoring, budget alerts, spend limits, and advanced bot protection through behavioral analysis and challenge-based verification. The post emphasizes that these features protect both infrastructure and budget by filtering malicious traffic and ensuring scaling only for legitimate users.