---
description: Monitor and control third-party scripts running on your site.
title: Protect against client-side threats
image: https://developers.cloudflare.com/og-docs.png
---

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# Protect against client-side threats

Last updated Aug 25, 2026|Copy as Markdown|[View as Markdown](https://4f1c5cd2.previews.developers.cloudflare.com/use-cases/application-security/client-side/index.md)|[Agent setup](https://4f1c5cd2.previews.developers.cloudflare.com/agent-setup/)

Third-party scripts on your site can be compromised to exfiltrate data or inject malicious code. Cloudflare's client-side security (previously known as Page Shield) monitors every JavaScript resource loading on your pages, detects suspicious behavior, and helps you manage Content Security Policies (CSPs).

## Solutions

### Client-side security

Monitor and control third-party scripts and outbound connections on your pages. [Learn more about client-side security](https://4f1c5cd2.previews.developers.cloudflare.com/client-side-security/).

* **Script monitoring** \- Track every JavaScript resource loading on your pages, including third-party scripts
* **Malicious script detection** \- Receive alerts when scripts exhibit suspicious behavior such as data exfiltration patterns
* **Connection monitoring** \- See which external endpoints scripts are sending data to
* **CSP management** \- Generate and manage Content Security Policies (CSPs) based on observed script behavior

## Get started

1. [Enable Client-side security](https://4f1c5cd2.previews.developers.cloudflare.com/client-side-security/get-started/)
2. [Review detected scripts](https://4f1c5cd2.previews.developers.cloudflare.com/client-side-security/detection/monitor-connections-scripts/)
3. [Configure rules](https://4f1c5cd2.previews.developers.cloudflare.com/client-side-security/rules/)

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