---
description: Protect your website from DDoS attacks, origin server threats, and other security risks with Cloudflare.
title: Security
image: https://developers.cloudflare.com/og-docs.png
---

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> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/fundamentals/llms.txt  
> Use this file to discover all available pages before exploring further.

# Security

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/fundamentals/security/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

* [Prevent DDoS attacks](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/learning-paths/prevent-ddos-attacks/concepts/)
* [Protect your origin server](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/fundamentals/security/protect-your-origin-server/)
* [Recovering from a hacked site](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/fundamentals/security/recovering-from-hacked-site/)
* [Scan for PCI compliance](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/fundamentals/security/pci-scans/)
* [Secure your website](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/learning-paths/application-security/account-security/)
* [Under a DDoS attack?](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/fundamentals/security/under-ddos-attack/)

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