Client-Side Security

Intelligent browser supply chain protections to keep your end users safe

Backed by our world-class threat intelligence and machine learning capabilities, Client-Side Security (Page Shield) helps defend against client-side attacks that target vulnerable JavaScript dependencies.

Talk to an expert

 
In submitting this form, you agree to receive information from Cloudflare related to our products, events, and special offers. You can unsubscribe from such messages at any time. We never sell your data, and we value your privacy choices. Please see our Privacy Policy for information.

Page Shield - Hero image

Benefits of Client-Side Security

Traffic attack browser - Tile
Intelligent attack prevention

Detect and mitigate browser supply chain attacks with machine learning-based protection.

Cloudflare radar - Tile
Automatic threat alerts

Get instant notifications when new scripts are detected, marked as malicious, or loaded from unknown domains.

Payments credit card - Tile
Meet compliance requirements

Reduce third-party vendor risk and address client-side requirements like GDPR, PCI, and more.

Page shield - HIW Image

HOW IT WORKS

Continuously monitor and prevent client-side threats

Client-Side Security simplifies third-party script management by tracking loading resources (like scripts) for potentially malicious additions, connections, or changes.

Powered by our threat intelligence and machine learning-based detection, it instantly identifies, reports, and blocks threats — before they reach your website.

Protect your end-users against malicious compromises

TOP Client-Side Security USE CASES

Traffic attack browser - Tile
Prevent financial and identity theft

Block browser-based attacks aimed at your users’ personal and financial information.

Code - Tile
Go beyond content security policies (CSP)

Monitor JavaScript dependencies and block threats with threat intelligence and machine learning that goes above and beyond CSPs.

Yes check - Icon Tile
Easily meet compliance requirements

Avoid noncompliance fines and adhere to the latest PCI DSS standards for compromised third-party script detection (section 6.4.3) and alerts (11.6.1).

Protect your end-users against malicious compromises

Resources

Insight thumbnail - rocket

Product brief

Client-Side Security product brief
Get product brief  
Blog Resource Thumbnail

Blog

Monitor all first-party cookies on your websites
Read blog  
Thumbnail - Insight - Template 1 Lightbulb

Article

Website security guide: A 10-step checklist
Learn more  
Thumbnail - Insight - Template 5 Graphs

Explore

Find the right Cloudflare plan for your small business
Explore now  
Insight thumbnail - rocket

Explore

Get free protection and acceleration for your personal website
Explore now  

Client-Side Security FAQs

Security Shield Protection Icon

Get Cloudflare Client-Side Security for your enterprise

Talk to an expert

 
In submitting this form, you agree to receive information from Cloudflare related to our products, events, and special offers. You can unsubscribe from such messages at any time. We never sell your data, and we value your privacy choices. Please see our Privacy Policy for information.