---
description: Protect sensitive data from exfiltration with DLP and CASB.
title: Prevent data loss
image: https://developers.cloudflare.com/og-docs.png
---

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# Prevent data loss

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

Sensitive data — Personally Identifiable Information (PII), payment card numbers, health records — can leave your network through employee uploads, SaaS misconfigurations, or compromised applications. Cloudflare One detects sensitive data patterns in traffic and blocks exfiltration in real time.

## Solutions

### Cloudflare One

Secure your organization with a cloud security platform that replaces legacy perimeters with Cloudflare's global network. [Learn more about Cloudflare One](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cloudflare-one/).

* **Data detection** \- Identify sensitive data patterns — Personally Identifiable Information (PII), Payment Card Industry (PCI), Protected Health Information (PHI), and custom patterns — in traffic flowing through Gateway
* **Inline protection** \- Block uploads or transfers of sensitive data in real time before they leave the network
* **SaaS visibility** \- Discover which SaaS applications employees are using, including unsanctioned shadow IT
* **Posture management** \- Identify misconfigurations and overly permissive sharing settings across connected SaaS apps

## Get started

1. [Configure DLP policies](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cloudflare-one/data-loss-prevention/)
2. [Set up CASB integrations](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cloudflare-one/cloud-and-saas-findings/)
3. [Create Gateway HTTP policies for DLP](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cloudflare-one/traffic-policies/http-policies/)

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