List of the Top 3 Free Client-Side Protection Platforms in 2025

Source Defense plays a crucial role in safeguarding web safety by securing data precisely at the point of entry. Its platform delivers a straightforward yet powerful approach to ensuring data security and meeting privacy compliance requirements. This solution effectively tackles the threats and risks associated with the growing reliance on JavaScript, third-party vendors, and open-source code within your online assets. By providing various options for code security, it also fills a significant gap in managing the risks of third-party digital supply chains, which includes regulating the actions of third-party, fourth-party, and beyond JavaScript that enhance your website's functionality. Furthermore, Source Defense Platform defends against a wide range of client-side security threats, such as keylogging, formjacking, and digital skimming, while also offering protection against Magecart attacks by extending security measures from the browser to the server environment. In doing so, it ensures a comprehensive security framework that adapts to the complexities of modern web interactions.

Effectively tracking third-party scripts removes ambiguity, guaranteeing that you remain informed about what is sent to your users' browsers, while also boosting script efficiency by as much as 30%. The uncontrolled existence of these scripts within users' browsers can lead to major complications when issues arise, resulting in negative publicity, possible legal repercussions, and claims for damages due to security violations. Organizations that manage cardholder information must adhere to PCI DSS 4.0 requirements, specifically sections 6.4.3 and 11.6.1, which mandate the implementation of tamper-detection mechanisms by March 31, 2025, to avert attacks by alerting relevant parties of unauthorized changes to HTTP headers and payment details. c/side is distinguished as the only fully autonomous detection system focused on assessing third-party scripts, moving past a mere reliance on threat intelligence feeds or easily circumvented detection methods. Utilizing historical data and advanced artificial intelligence, c/side thoroughly evaluates the payloads and behaviors of scripts, taking a proactive approach to counter new threats. Our ongoing surveillance of numerous websites enables us to remain ahead of emerging attack methods, as we analyze all scripts to improve and strengthen our detection systems continually. This all-encompassing strategy not only protects your digital landscape but also cultivates increased assurance in the security of third-party integrations, fostering a safer online experience for users. Ultimately, embracing such robust monitoring practices can significantly enhance both the performance and security of web applications.

Feroot is committed to ensuring that both businesses and their customers can participate in a secure and protected online environment. The company's objective focuses on safeguarding web applications from the client side, enabling users to navigate online platforms safely, whether they are shopping on an e-commerce site, utilizing digital health services, or managing financial transactions. Their innovative solutions assist organizations in identifying supply chain vulnerabilities and fortifying their client-side defenses against potential attacks. One of their key offerings, Feroot Inspector, empowers companies to conduct thorough scans, maintain constant monitoring, and implement security measures to mitigate the risks of data breaches caused by JavaScript vulnerabilities, third-party integrations, and configuration flaws. Additionally, their data protection features streamline the often labor-intensive processes of code reviews and threat assessments, while clarifying uncertainties related to client-side security monitoring and response. Ultimately, Feroot strives to foster a trusted digital landscape where online interactions are inherently safer for everyone involved.