Your AppSec Stack Has a Blindspot
Your platform loads third-party scripts. When one of those scripts is compromised, malicious code can be injected to steal customer data.
CSPs, Crawlers, and JS agents were built for static threats. Modern attacks inject dynamic code to evade these approaches.
Global standards like PCI DSS and GDPR hold companies liable for risks introduced by 3rd party scripts.
Our hybrid proxy architecture provides real-time client-side security with complete visibility into every JavaScript script running on your SaaS platform. We continuously monitor, analyze, and block malicious code before it can steal user credentials, API keys, or business data from your customers.
Our hybrid proxy monitors the activity of every script, blocking malicious code from reaching users on your platform or workflows.
PCI 6.4.3 & 11.6.1 requirements with script inventory, change detection, justifications, and audit-ready reports.
Identify what personal data each third-party script has access to and where it's sent. Stay compliant with GDPR and prevent PII leaks.
Generate device fingerprints to prove legitimate subscription sign-ups and prevent friendly fraud chargebacks from customers claiming unauthorized transactions.
Access to user credentials, API keys, and business data across multiple customers
Integrations with multiple third-party services increase attack entry points
Onboarding forms collect sensitive business information
Modern web apps serve more code in the browser, widening the attack surface.
"cside tells me everything I need to know about a script, and makes sure they are safe to show to the user. It's really made me realize how big of a problem 3rd party script security is, and there are no other solutions I've tried that dive as deep as cside."
Our experts can conduct a client-side vulnerability assessment and provide a customized recommendation.
Common Client-Side Attacks for SaaS Platforms
Code hidden in subscription pages or onboarding pages can capture user credentials or business information
Attackers purchase expired domains of scripts on your site to change code from an approved source
A breach in one of your trusted providers (analytics or integrations) can infect your entire platform
Advanced threats target sessions with specific criteria (e.g. IP address) to evade traditional detection
Misconfigured or malicious scripts violate your privacy control policy to exfiltrate sensitive PII
Injected ads or pop-ups inside the browser trick users into clicking fraudulent links
Our hybrid proxy delivers advantages traditional tools can't match.
| vs. Crawler-Based Solutions | vs. Content-Security Policy (CSP) | vs. Client-Side Agents |
|---|---|---|
| Sees real user behavior, not sanitized crawler views | Monitors script payloads, not just sources | Undetectable monitoring attackers can't bypass |
| Catches attacks aimed at specific segments | Detects breaches at trusted third-party providers | Complete historical script behavior tracking |
| Detects threats between periodic scans | Handles dynamic scripts CSPs can't control | Future-proof against evolving techniques |