From the source
Vercel announced enhancements to its Web Application Firewall (WAF), including persistent actions that block repeat offenders for a customizable duration, rate limiting for specific endpoints to prevent API abuse, and a Firewall API for programmatic control of WAF settings.
- The Challenge page feature, previously exclusive to the WAF, is now extended to the broader Vercel Firewall.
- The WAF propagates rules globally in 300 milliseconds.






