Best Client-Side Protection Platforms
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Compare the Top Client-Side Protection Platforms as of February 2026
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What are Client-Side Protection Platforms?
Client-side protection platforms are security tools designed to protect users from threats that can arise when interacting with websites. These platforms monitor and secure the client-side environment, such as web browsers, against vulnerabilities like cross-site scripting (XSS), malicious JavaScript, and other client-side attacks. They provide features such as real-time threat detection, script monitoring, and content security policies (CSP) enforcement to ensure that the web content being loaded is safe and hasn't been tampered with. By securing the client side, these platforms help prevent data breaches, session hijacking, and unauthorized access to sensitive information during web interactions. This protection is crucial for maintaining the integrity and security of online user experiences. Compare and read user reviews of the best Client-Side Protection platforms currently available using the table below. This list is updated regularly.
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1
Reflectiz
Reflectiz
Reflectiz offers advanced client-side protection, securing web assets from vulnerabilities in third-party components like scripts, trackers, and open-source libraries. These client-side elements are often overlooked by traditional tools, making them prime targets for security breaches. Operating remotely with zero impact on website performance, Reflectiz provides real-time visibility into third-party risks and vulnerabilities. It continuously monitors third-party code and external resources, proactively detecting threats before they escalate. With AI-powered risk detection and real-time alerts, Reflectiz automates the identification of client-side vulnerabilities, enabling businesses to block threats immediately. This solution enhances data privacy, ensures compliance, and protects web applications without the need for code changes, making it an essential part of any client-side security strategy.Starting Price: $5000/year -
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Source Defense
Source Defense
Source Defense is a mission critical element of web security designed to protect data at the point of input. The Source Defense Platform provides a simple and effective solution for data security and data privacy compliance – addressing threats and risks originating from the increased use of JavaScript, third-party vendors, and open-source code in your web properties. The Platform provides options for securing your own code, as well as addressing a ubiquitous gap in the management of third-party digital supply chain risk – controlling the actions of the third-party, fourth and nth party JavaScript that powers your site experience. The Source Defense Platform protects against all forms of client-side security incidents – keylogging, formjacking, digital skimming, Magecart, etc. – by extending web security beyond the server to the client-side (the browser). -
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GlobalDots
GlobalDots
20-year world leader in cloud & web innovation, connecting over 1,000 global businesses such as Lufthansa, Playtika, AppsFlyer, Fiat and Payoneer with the latest technologies. Our ever-growing solution portfolio contains over 80 innovative technologies, including: Security, Performance, DevOps & Cloud Management, Corporate IT, and advanced AI/ML models. Led by a team of innovation-driven engineers & architects, GlobalDots offers easy end-to-end technology adoption. Proactively introducing newer, better solutions, it helps businesses maintain a scalable, up-to-date technology posture in a quickly-changing world. Its enterprise clients breeze through cloud transformation; Its growing, cloud-native clients benefit from scalable, cost-effective and highly secure infrastructures. With our services, clients achieve significant cost reductions, accelerated business processes, and globally scalable infrastructures. -
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ByteHide
ByteHide
ByteHide is an all-in-one, developer-first application security platform designed to protect code, secrets, data, and runtime environments, while minimizing your dependencies and risk. It integrates seamlessly with your development workflows and communication tools, delivering key security insights and alerts without disrupting productivity. Operating under a zero-knowledge model, ByteHide uses client-side encryption so only you hold the keys, and it never stores your source code. With minimal, typically read-only permissions, you remain fully in control of what repositories and data sources are analyzed. ByteHide’s core tools include Shield for next-generation code obfuscation and anti-tampering, Secrets for AI-powered secret detection and decentralized management, Monitor for real-time runtime threat detection, and Radar for unified SAST/SCA scanning. These tools run in secure, isolated environments and automatically mask sensitive personal data.Starting Price: €39.99 per month -
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Imperva Client-Side Protection
Imperva
Client-Side Protection provides real-time monitoring of all client-side resources and JavaScript behavior. Gain control over all first and third-party JavaScript code embedded on your website. Actionable insights make it easy to identify risky resources and scripts that should not load on your client side. And if any JavaScript code is compromised, your security team is the first to know. Provides comprehensive inventorying, authorization, dynamic integrity verification, and real-time monitoring, helping streamline regulatory compliance with the new client-side security requirements introduced in PCI DSS 4.0. Protect your website against client-side attacks and streamline regulatory compliance with PCI DSS 4.0. Client-side attacks increase as web applications shift to client-side logic and incorporate more third-party code and resources. These attacks can directly steal sensitive customer data, resulting in breaches and noncompliance with data privacy regulations. -
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Client-Side Protection helps protect against end-user data exfiltration and shield websites from JavaScript threats. It analyzes script behavior in real-time, provides actionable insights in a single dashboard view, and delivers alerts to mitigate harmful script activity. Designed for PCI DSS v4.0, the solution helps businesses meet new script security requirements and safeguards against client-side attacks. Inject simple scripts into each monitored page without meaningfully impacting performance. Monitor and assess script activity from the browser while machine learning techniques analyze the risk of unauthorized action. Get real-time alerts, with detailed information about mitigation, if an active threat or attack is found. Immediately restrict malicious scripts from accessing and exfiltrating sensitive data on protected pages with one click. Defend your site from client-side threats. Ease compliance with PCI DSS v4.0. Strengthen your web page integrity.
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Domdog
Domdog
Domdog is the most flexible and no-nonsense solution for compliance with 6.4.3 and 11.6.1 requirements of PCI DSS 4.0.1. Every organization has different preferences and constraints regarding what new systems they can integrate into their payment pages. With this in mind, Domdog has been designed to support Remote Scanning, JavaScript Agent, and Content Security Policy. This ensures that no matter what an organization's preferences are, Domdog can help them meet the 6.4.3 and 11.6.1 requirements with the least amount of effort and friction. Domdog offers a range of plans that cover small businesses to large enterprises. While the Business plan focuses on cost-effectiveness and simplified compliance, the Enterprise plan focuses on maximum flexibility and managed onboarding. -
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Human Defense Platform
HUMAN
HUMAN is a leading cybersecurity company committed to protecting the integrity of the digital world. We verify that digital interactions, transactions, and connections are authentic, secure, and human. The Human Defense Platform safeguards the entire customer journey with high-fidelity decision-making that defends against bots, fraud, and digital threats. Each week, HUMAN verifies 20 trillion digital interactions, providing unparalleled telemetry data to enable rapid, effective responses to even the most sophisticated threats. Recognized by our customers as a G2 Leader, HUMAN continues to set the standard in cybersecurity. -
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Protect against Magecart, formjacking, skimming, PII harvesting, and other critical security vulnerabilities. Fill the gap in your security defenses. Gain visibility and control of third-party JavaScript libraries running in your web applications to keep customers’ personal and financial data out of the hands of criminals. Mitigate risk by monitoring JavaScript libraries in real time to identify vulnerabilities and anomalous behavior that could compromise customer data. Avoid customer fraud and compliance fines. Protect against data theft that would undermine customer confidence and damage your brand. Stop software supply chain attacks. Detect and track all third-party scripts running on your site to identify suspicious scripts or changes in the behavior of trusted scripts. Prevent credential stuffing on the client side to block account takeover attempts. Proactively monitor web apps in the browser to catch criminals in the act.
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Radware Client-Side Protection
Radware
Cybercriminals are targeting an unmonitored source for personal and financial data, the application supply chain. This includes the dozens of automatically trusted third-party services embedded in your application environments that can expose user-entered addresses, credit card numbers, and more. Protect the data path between end users’ browsers and third-party services by extending Radware’s blanket of security to your application supply chain. Our advanced client-side protection complies with new PCI-DSS 4.0 requirements, so you can keep your customer data safe, and your reputation intact. Discover third-party scripts and services running on the browser side of your application. Receive real-time activity tracking alerts and threat-level assessments according to multiple indicators (compliant with PCI-DSS 4 regulations). Prevent data leakage by blocking destinations that are unknown or have illegitimate parameters. -
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Jsmon
Jsmon Inc.
Jsmon is an advanced JavaScript security platform that continuously scans JS files to detect leaked secrets, sensitive information, and potential vulnerabilities. Trusted by thousands of users, it offers 24/7 JS crawling, automated threat detection, and real-time monitoring to protect your domains. Jsmon’s powerful NodeJS analysis engine identifies hardcoded API keys, credentials, and other security risks across millions of JS files and API paths. The platform features AI-powered Ask AI, which instantly translates complex scan results into plain English. Users benefit from automated notifications via Slack, email, or Discord and can track changes in JS files over time. Jsmon also supports integrations and provides detailed reporting in PDF, JSON, and CSV formats.Starting Price: $25/month/user
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