Protecting your app against malicious traffic and unexpected costs
Learn how to use Vercel's Firewall to block malicious traffic, set up spend limits for cost control, and apply code optimizations to protect your application. Free tier users are protected with automatic pausing when usage limits are exceeded.
Let's explore how to block traffic with the Firewall, set up soft and hard spend limits, apply code-level optimizations, and more to protect your app against bad actors.
If you’re on our free tier, you don’t need to worry. When your app passes the included free usage, it is automatically paused and never charged.
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