Content Security Policy (CSP)

Base-Layer Client-Side Security for Everyone

cside offers greater protection at a lower cost. A properly configured Content Security Policy (CSP) can help prevent dangerous third-party script sources from being fetched. With cside, you can deploy a Content Security Policy and use the cside endpoint included in your plan. We offer a single pane of glass to handle violations, reporting, and combined with our client-side script, give you visibility into suspicious script behavior via full client-side forensics.

Why CSP is Essential Base-Layer Security

CSP headers tell the browser which domains are allowed to serve JavaScript on your site. Any script from an unauthorized source gets blocked before it can execute, preventing obvious attacks from unknown domains.

cside analyzes your website's script usage and generates optimized CSP policies automatically. No need to manually maintain whitelist of approved domains—we handle the complexity for you.

As your website evolves and adds new third-party integrations, cside keeps your CSP policies up to date and alerts you to violations in real-time through our unified security dashboard.

WITH CSIDE

100% free CSP management and violation reporting

Automatic CSP policy generation and deployment

Real-time violation monitoring in unified dashboard

Combined CSP + client-side forensics for complete visibility

Everything You Need for CSP Management

Illustration showing automatic CSP policy creation

Automatic Policy Generation Analyze your site and generate optimized CSP policies that balance security with functionality

Continuous Updates Keep policies current as your website adds new scripts and third-party integrations over time

Illustration showing CSP violation monitoring dashboard

Violation Dashboard Monitor CSP violations in real-time with detailed reporting on blocked script attempts

Illustration showing CSP management controls

Full Management Control Fine-tune policies, approve new domains, and manage CSP headers through an intuitive interface

Free Security for All Industries

e-commerce

Block unauthorized payment skimmers while allowing legitimate checkout scripts.

Healthcare & Pharma

Maintain baseline HIPAA compliance by controlling script sources on patient portals.

Payment Providers

Prevent unauthorized scripts from accessing sensitive payment processing pages.

Get Started for Free

We believe security should be accessible to everyone. That's why we offer CSP management for free.

Simon Wijckmans

CEO, cside

How cside Compares Against Competitors

	cside	DataDome	Imperva Client Side Protection	Reflectiz	Report URI	Cloudflare Page Shield	Fastly Client-Side Protection
CSP Report Endpoint Price	$0.00 / year	Enterprise + $4,990.00 / year	Pro plan + $5,100.00 / year	Starting at $5,000.00 / year	Starting at $659.00 / year	Enterprise only	Enterprise only

Why cside Outperforms Every Alternative

vs. Crawler-Based Solutions: Sees real user behavior, not sanitized crawler views. Catches attacks aimed at specific segments. Detects threats between periodic scans.

vs. Content Security Policy (CSP): Monitors script payloads, not just sources. Detects breaches at trusted third-party providers. Handles dynamic scripts CSPs can't control.

vs. Client-Side Agents: Undetectable monitoring attackers can't bypass. Complete historical script behavior tracking. Future-proof against evolving techniques.

FAQ

Frequently Asked Questions

View all FAQs

We fundamentally believe every individual and operation should be able to secure themselves. We understand that not every business has the resources to get the right security measures in place. Therefore, we want to contribute to this belief by offering this base-level of security for free.

Requirement 6.4.3 and 11.6.1 of PCI DSS mandates scripts and HTTP headers to be monitored for changes. A Content Security Policy can only control the sources of where scripts are fetched from. It has no view inside the script payload, hence cannot spot changes which are required to meet PCI DSS demands.

CSP is a great base-layer when it comes to client-side security. Depending on your needs, it can provide enough security, but it's not the highest level achievable. A CSP cannot see the contents of the script. Thus, should they turn malicious, you will be susceptible to an attack. If you run a limited level of considered safe scripts, and depending on your internal risk evaluation, a CSP is a great way to start. Especially with free offerings like ours.

CSP products let you list 'good' domains and tell the browser to block everything else. That stops obvious out-of-scope hosts and ticks PCI 6.4.3, but it never looks at the JavaScript itself. If an attacker slips bad code onto an approved CDN, CSP would not catch it.

cside works the other way around: every third-party script is fetched through our edge, hashed, scanned, and either served clean or blocked before the browser sees it. Because we keep the full payload and header record, we also cover PCI 11.6.1 without any manual lists to maintain.

A properly configured Content Security Policy (CSP) can help prevent dangerous third-party script sources from being fetched. With cside, you can now deploy a Content Security Policy and use the cside endpoint included in your plan. We offer a single pane of glass to handle violations, reporting, and combined with our client-side script, give you visibility into suspicious script behavior via full client-side forensics.

While other vendors charge separately for CSP report endpoints, cside includes this functionality in your plan at no extra cost. Our integrated approach means CSP violations appear in the same dashboard as your other security insights, providing a complete picture of your client-side security posture.