Malicious or misconfigured website scripts can leak personally identifiable information (PII) without teams realizing it. For comprehensive protection, combine with our Client-Side Security solution.
Attackers don't have to break into your servers. They use third-party scripts on your website to exfiltrate personal data silently.
Whether users "accept" or "reject", misconfigured code can still leak their private information.
Manual reviews quickly go stale. Website code is constantly changing. It's impossible to protect users without an automated solution
"We have tried multiple products but almost all of them turned out to be just compliance checkboxes. The detection capabilities we got with cside were unlike anything we saw in other products we tested in the past."
Our experts can conduct a risk assessment and uncover vulnerabilities on your client-side.
Real-time client-side monitoring that prevents data leaks attackers rely on — not point-in-time crawls or superficial checks.
| vs. Crawler-Based Solutions | vs. Content-Security Policy (CSP) | vs. Javascript Agents |
|---|---|---|
| Looks at what users experience, not a cleaned up crawler snapshot | Watches what scripts do with data, not just script sources | Deploys a mechanism that attackers can't bypass |
| Identifies data leaks aimed at specific regions | Detects breaches in the supply chain of trusted third-party vendors | Complete historical script behavior tracking |
| Real-time instead of point-in-time | Handles dynamic scripts CSPs can't control | Built to adapt against new evasion techniques |
FAQ
Frequently Asked Questions
Client-side attacks happen when malicious code hidden in third-party scripts steals your users' sensitive information directly from their browsers. These attacks are particularly dangerous because they can capture payment details, personal data, and login credentials without you even knowing it's happening. Recent examples like Magecart and Polyfill have compromised millions of websites, leading to massive data breaches and regulatory fines.
Third-party scripts can become malicious in several ways. Sometimes legitimate scripts are updated with malicious code when ownership changes or when the original company gets compromised. Other times, attackers use supply chain attacks to inject malicious code into popular libraries that thousands of websites use. The tricky part is that these scripts often look completely normal and work as expected while secretly collecting your users' data in the background.
cside automatically monitors and prevents unauthorized data collection at the browser level, helping you maintain compliance with GDPR, CRPA, PDPA, HIPAA, and DPDPA regulations. Our solution provides real-time privacy violation detection across all third-party scripts on your site, preventing data from being collected without proper consent.
Hash-locking is cside's unique technology that allows you to "freeze" third-party scripts at their last known safe version. When we detect that a script has become malicious, instead of completely blocking it (which could break your website), we can serve the previous safe version using its stored hash. This means your website continues to function normally while staying protected from malicious updates.
The average cost of a data breach is $4.44 million according to IBM's 2023 Security Report, but client-side attacks can be even more expensive due to regulatory fines and lost customer trust.
csside maintains its own proprietary threat intelligence feed that doesn't rely on third-party sources, giving us faster detection of new threats and better accuracy in identifying malicious behavior. Unlike generic threat feeds that focus on known bad actors, our intelligence is specifically tailored to client-side attacks and third-party script behavior.