# Best Client-Side Protection Solutions

  *By [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)*

   Client-side protection solutions help businesses protect their customers against end-user data exfiltration and shield websites from threats related to vulnerable source code. These solutions analyze script behavior in real time, provide actionable insights in a single dashboard view, and deliver alerts to mitigate harmful script activity.

These front-end security tools allow organizations to gain visibility and control over first and third-party website code, reducing the risk of supply chain fraud and preventing data breaches and client-side attacks. They identify and prevent web skimming attacks and protect websites against malicious script injections and unauthorized third-party data collection.

Client-side protection software offers protection against client-side attacks, including keylogging, form jacking, cross-site scripting (XSS), data harvesting (PII harvesting), digital skimming, and Magecart. These tools ultimately help businesses stay compliant with PCI DSS and other financial and data privacy regulations.

Client-side protection tools have some overlap with [attack surface management software](https://www.g2.com/categories/attack-surface-management) and [risk-based vulnerability management software](https://www.g2.com/categories/risk-based-vulnerability-management) as all three are deployed to identify vulnerabilities and reduce the attack surface. However, unlike the other two, client-side protection software focuses specifically on securing the client-side environment, typically within web browsers or mobile devices.

To qualify for inclusion in the Client-side Protection Solutions category, a product must:

- Offer continuous scanning of websites and applications for suspicious activities, prompt alerts, and capabilities to respond to client-side threats
- Offer visibility into an application’s third-party components
- Prevent credential stuffing on the client side to block account takeover attempts
- Protect against a wide range of client-side threats, including XSS attacks, formjacking, digital skimming, and Magecart exploits
- Provide actionable insights and reporting features for clear visibility into security incidents, vulnerabilities, and compliance status




  
## How Many Client-Side Protection Solutions Products Does G2 Track?
**Total Products under this Category:** 16

### Category Stats (May 2026)
- **Average Rating**: 4.45/5 (↑0.01 vs Apr 2026)
- **New Reviews This Quarter**: 4
- **Buyer Segments**: Mid-Market 50% │ Enterprise 33% │ Small-Business 17%
- **Top Trending Product**: Jscrambler (+0.005)
*Last updated: May 18, 2026*

  
## How Does G2 Rank Client-Side Protection Solutions Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 700+ Authentic Reviews
- 16+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

  
## Which Client-Side Protection Solutions Is Best for Your Use Case?

- **Leader:** [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews)
- **Highest Performer:** [Reflectiz](https://www.g2.com/products/reflectiz/reviews)
- **Easiest to Use:** [Feroot Security](https://www.g2.com/products/feroot-security/reviews)
- **Top Trending:** [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews)
- **Best Free Software:** [Jscrambler](https://www.g2.com/products/jscrambler/reviews)

  
---

**Sponsored**

### Reflectiz

Reflectiz is a comprehensive web exposure management platform designed to help organizations proactively identify, monitor, and mitigate security, privacy, and compliance risks across their online environments. As the complexity of modern websites continues to grow, Reflectiz addresses the challenges posed by first, third, and even fourth-party components, such as scripts, trackers, and open-source libraries that often evade traditional security tools. This platform empowers businesses to gain full visibility and control over their web ecosystems, ensuring a robust defense against potential threats. The target audience for Reflectiz includes organizations that rely heavily on web applications and digital services, particularly those in sectors such as e-commerce, financial services, and healthcare. These industries are characterized by their need to maintain privacy, protect customer data, and ensure compliance with various regulations. Security teams, compliance officers, and IT professionals will find Reflectiz particularly beneficial, as it offers a hassle-free yet effective solution for continuous monitoring of their web environments. By using Reflectiz, organizations can stay ahead of sophisticated web-based threats and regulatory challenges. Reflectiz operates remotely, eliminating the need to embed code on customer websites. This approach ensures that there is no impact on site performance, no access to sensitive user data, and no additional attack surface. The platform utilizes a unique, proprietary browser that dynamically explores and analyzes web pages as a real user would, uncovering activities even within iFrames, cookies, and hidden scripts. This deep behavioral analysis is crucial for developing a proactive security strategy, allowing organizations to detect unauthorized data collection, personally identifiable information (PII) harvesting, and other malicious activities. Key features of Reflectiz include complete web discovery, which provides automated, real-time mapping of all website components, offering unmatched visibility into the full web threat surface. The platform also prioritizes risks through intelligent exposure ratings and context-aware assessments, helping security teams focus on the most critical vulnerabilities while reducing alert fatigue. Additionally, Reflectiz offers comprehensive vendor analysis to identify and mitigate risks introduced by third-party and open-source tools. Its remote execution model means that organizations can leverage the platform without on-site deployment or client-side scripts, significantly reducing operational overhead. By integrating Reflectiz into their security framework, organizations gain actionable insights and measurable improvements in their web security posture. This proactive exposure management approach not only strengthens resilience against evolving threats but also helps maintain compliance and safeguard customer trust, fostering a safer and more trustworthy digital presence.



[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1008235&secure%5Bdisplayable_resource_id%5D=1008235&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1008235&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=144601&secure%5Bresource_id%5D=1008235&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fclient-side-protection&secure%5Btoken%5D=f8b3221b69dd24d9ae5a1e1b84b6bfb607384eab5ad35de4b418b54063948603&secure%5Burl%5D=https%3A%2F%2Fwww.reflectiz.com%2Fbook-a-meeting%2F&secure%5Burl_type%5D=book_demo)

---

  ## What Are the Top-Rated Client-Side Protection Solutions Products in 2026?
### 1. [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews)
  Cloudflare is the connectivity cloud for the "everywhere world," on a mission to help build a better Internet. We provide a unified platform of networking, security, and developer services delivered from a single, intelligent global network that spans hundreds of cities in over 125 countries. This empowers organizations of all sizes, from small businesses to the world's largest enterprises, to make their employees, applications, and networks faster and more secure everywhere, while significantly reducing complexity and cost. Our comprehensive platform includes: - Advanced Security: Protect your online presence with industry-leading DDoS protection, a robust Web Application Firewall (WAF), Bot mitigation, and API security. Implement Zero Trust security to secure remote access, data, and applications for your entire workforce. - Superior Performance: Accelerate website and application loading times globally with our Content Delivery Network (CDN), intelligent DNS, and smart routing capabilities. Optimize images and deliver dynamic content with unparalleled speed. - Powerful Developer Tools: Empower your developers to build and deploy full-stack applications at the edge using Cloudflare Workers (serverless functions), R2 Storage (object storage without egress fees), and D1 (serverless SQL database). Cloudflare helps connect and protect millions of customers globally, offering the control, visibility, and reliability businesses need to work, develop, and accelerate their operations in today's hyperconnected landscape. Our global network continuously learns and adapts, ensuring your digital assets are always protected and performing at their best.


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 578

**Who Is the Company Behind Cloudflare Application Security and Performance?**

- **Seller:** [Cloudflare, Inc.](https://www.g2.com/sellers/cloudflare-inc)
- **Company Website:** https://www.cloudflare.com
- **Year Founded:** 2009
- **HQ Location:** San Francisco, California
- **Twitter:** @Cloudflare (280,536 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/407222/ (6,898 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Web Developer, Software Engineer
  - **Top Industries:** Information Technology and Services, Computer Software
  - **Company Size:** 62% Small-Business, 26% Mid-Market


#### What Are Cloudflare Application Security and Performance's Pros and Cons?

**Pros:**

- Security (54 reviews)
- Ease of Use (50 reviews)
- Features (45 reviews)
- Performance (36 reviews)
- Reliability (36 reviews)

**Cons:**

- Complex User Interface (24 reviews)
- Expensive (24 reviews)
- Complex Setup (19 reviews)
- Complexity (18 reviews)
- Learning Curve (15 reviews)

### 2. [Reflectiz](https://www.g2.com/products/reflectiz/reviews)
  Reflectiz is a comprehensive web exposure management platform designed to help organizations proactively identify, monitor, and mitigate security, privacy, and compliance risks across their online environments. As the complexity of modern websites continues to grow, Reflectiz addresses the challenges posed by first, third, and even fourth-party components, such as scripts, trackers, and open-source libraries that often evade traditional security tools. This platform empowers businesses to gain full visibility and control over their web ecosystems, ensuring a robust defense against potential threats. The target audience for Reflectiz includes organizations that rely heavily on web applications and digital services, particularly those in sectors such as e-commerce, financial services, and healthcare. These industries are characterized by their need to maintain privacy, protect customer data, and ensure compliance with various regulations. Security teams, compliance officers, and IT professionals will find Reflectiz particularly beneficial, as it offers a hassle-free yet effective solution for continuous monitoring of their web environments. By using Reflectiz, organizations can stay ahead of sophisticated web-based threats and regulatory challenges. Reflectiz operates remotely, eliminating the need to embed code on customer websites. This approach ensures that there is no impact on site performance, no access to sensitive user data, and no additional attack surface. The platform utilizes a unique, proprietary browser that dynamically explores and analyzes web pages as a real user would, uncovering activities even within iFrames, cookies, and hidden scripts. This deep behavioral analysis is crucial for developing a proactive security strategy, allowing organizations to detect unauthorized data collection, personally identifiable information (PII) harvesting, and other malicious activities. Key features of Reflectiz include complete web discovery, which provides automated, real-time mapping of all website components, offering unmatched visibility into the full web threat surface. The platform also prioritizes risks through intelligent exposure ratings and context-aware assessments, helping security teams focus on the most critical vulnerabilities while reducing alert fatigue. Additionally, Reflectiz offers comprehensive vendor analysis to identify and mitigate risks introduced by third-party and open-source tools. Its remote execution model means that organizations can leverage the platform without on-site deployment or client-side scripts, significantly reducing operational overhead. By integrating Reflectiz into their security framework, organizations gain actionable insights and measurable improvements in their web security posture. This proactive exposure management approach not only strengthens resilience against evolving threats but also helps maintain compliance and safeguard customer trust, fostering a safer and more trustworthy digital presence.


  **Average Rating:** 4.7/5.0
  **Total Reviews:** 29

**Who Is the Company Behind Reflectiz?**

- **Seller:** [Reflectiz](https://www.g2.com/sellers/reflectiz)
- **Company Website:** https://www.reflectiz.com/
- **Year Founded:** 2016
- **HQ Location:** Ramat Gan, IL
- **Twitter:** @_Reflectiz_ (2,200 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/reflectiz/ (52 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 52% Enterprise, 31% Mid-Market


#### What Are Reflectiz's Pros and Cons?

**Pros:**

- Security (5 reviews)
- Alerts (3 reviews)
- Ease of Use (3 reviews)
- Monitoring (3 reviews)
- Real-time Monitoring (3 reviews)

**Cons:**

- Expensive (2 reviews)
- Complexity (1 reviews)
- Insufficient Training (1 reviews)
- Lack of Clarity (1 reviews)
- Learning Difficulty (1 reviews)

### 3. [Feroot Security](https://www.g2.com/products/feroot-security/reviews)
  The Feroot AI Platform brings intelligent automation to ensure compliant and secure user experiences across web and mobile applications—eliminating manual processes, reducing human error, and replacing operational overhead with continuous, real-time protection. Instead of spending months manually auditing websites and mobile applications, organizations can achieve security and compliance in as little as 45 seconds. Feroot automates website security and compliance programs to help meet the requirements of PCI DSS 4.0.1, HIPAA (including Rules on the Use of Online Tracking Technologies), CCPA / CPRA, GDPR, CIPA, and more than 50 global laws and industry standards. At the core of the platform are Feroot AI Agents that continuously monitor, detect, and enforce compliance across client-side environments. They identify and stop hidden threats such as Magecart attacks, formjacking, unauthorized tracking, data leakage, and malicious third-party scripts before they can compromise sensitive data. Feroot is purpose-built to protect high-value web assets including payment pages, login forms, healthcare portals, and other sensitive workflows where customer and patient data is most at risk. The unified platform integrates critical web security and compliance capabilities into a single solution, including: • JavaScript behavior analysis • Web compliance scanning • Third-party script monitoring • Consent audit and policy enforcement • Data privacy posture management By combining security monitoring with automated compliance enforcement, Feroot provides complete visibility and control over client-side risk without adding complexity. From Fortune 500 enterprises to healthcare providers, retailers, SaaS platforms, universities, utilities, municipalities, travel companies, gaming platforms, and payment service providers, organizations of all sizes trust Feroot to safeguard sensitive customer data and maintain regulatory compliance in an increasingly complex digital landscape. Feroot AI solutions include: • PaymentGuard AI – Protects payment workflows and PCI-scoped environments • HealthData Shield AI – Secures patient data and healthcare portals • AlphaPrivacy AI – Ensures data privacy compliance and user consent enforcement • CodeGuard AI – Monitors and protects client-side code integrity and behavior Visit https://www.feroot.com for more information.


  **Average Rating:** 4.9/5.0
  **Total Reviews:** 27

**Who Is the Company Behind Feroot Security?**

- **Seller:** [Feroot Security](https://www.g2.com/sellers/feroot-security)
- **Company Website:** https://www.feroot.com
- **Year Founded:** 2017
- **HQ Location:** Toronto, Ontario, Canada
- **LinkedIn® Page:** http://www.linkedin.com/company/feroot (45 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 52% Enterprise, 26% Mid-Market


#### What Are Feroot Security's Pros and Cons?

**Pros:**

- Customer Support (14 reviews)
- Ease of Use (9 reviews)
- Security (9 reviews)
- Helpful (7 reviews)
- Easy Integrations (6 reviews)

**Cons:**

- Poor Interface Design (4 reviews)
- Complexity (3 reviews)
- Not Intuitive (3 reviews)
- Complex Setup (2 reviews)
- Difficult Setup (2 reviews)

### 4. [Jscrambler](https://www.g2.com/products/jscrambler/reviews)
  Jscrambler is the leader in Client-Side Security for the modern, composable web. As organizations increasingly build digital experiences through third-party software supply chains and AI-powered agents, sensitive data is now created directly in the browser — the point of creation for digital interactions — making it one of the enterprise’s most privileged yet least governed attack surfaces. Jscrambler’s Client-Side Security Platform is powered by a Behavioral Enforcement Core that governs how application code, third-party scripts, and sensitive data behave at runtime. By enforcing software integrity and data governance directly in the browser, the platform ensures sensitive data and AI inputs are controlled according to enterprise policy at the point of creation — before they leave the client environment. Trusted by leading global retailers, airlines, financial services providers, and healthcare organizations, Jscrambler provides the visibility and enforcement organizations need to stop client-side attacks, prevent data leakage, and maintain compliance with regulations including PCI DSS, GDPR, HIPAA, CCPA, and the EU AI Act.


  **Average Rating:** 4.4/5.0
  **Total Reviews:** 31

**Who Is the Company Behind Jscrambler?**

- **Seller:** [Jscrambler](https://www.g2.com/sellers/jscrambler)
- **Company Website:** https://jscrambler.com
- **Year Founded:** 2014
- **HQ Location:** San Francisco, California
- **Twitter:** @Jscrambler (1,161 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/1005462/ (92 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 35% Mid-Market, 29% Small-Business


#### What Are Jscrambler's Pros and Cons?

**Pros:**

- Security (3 reviews)
- Ease of Use (2 reviews)
- User Interface (2 reviews)
- Automation (1 reviews)
- Comprehensive Overview (1 reviews)

**Cons:**

- Difficult Initiation (2 reviews)
- Slow Performance (2 reviews)
- Dashboard Issues (1 reviews)
- Error Handling (1 reviews)
- Lack of Guidance (1 reviews)

### 5. [cside](https://www.g2.com/products/cside/reviews)
  What is cside? cside is a browser-layer security platform that gives organisations complete visibility and control over the third-party JavaScript running on their websites. It intercepts every script before it reaches the user, captures the full payload, and analyses runtime behaviour in real time. Third-party scripts power modern websites. Analytics, chat, payments, advertising, and session replay tools all inject JavaScript that runs directly in your visitors' browsers. You didn't write that code. You don't control when it changes. And you have no idea what it does at runtime. That is the client-side blind spot. The three problems cside solves 1) Every third-party script is a blind spot. Analytics, chat, payments, ads: you didn't write it, you don't control it, and you have no idea what it does at runtime inside a real browser. 2) PCI DSS 4.0.1 requirements 6.4.3 and 11.6.1 are now enforced. Most companies have no idea how to meet them, and their existing vendors don't cover it. WAFs, CDNs, and tag managers were never built for this problem. 3) AI agents and bots are now targeting high-value web workflows including checkout, login, and form submission in ways that WAFs and CDN-layer tools were never designed to catch. The attack surface has moved into the browser. The tools haven't. What you get with cside 1) Visibility you have never had. Every script on every page, classified, behavioural-profiled, and monitored continuously. Not what a scanner saw on its last crawl. What actually ran in a real user's browser, in real time. 2) Compliance, done. 6.4.3 and 11.6.1 documentation generated automatically. Auditor-ready output without manual effort. QSA-validated. No CSV exports to fill in by hand. 3) Real-time blocking. Malicious or anomalous script behaviour stopped at the browser layer before data leaves the page. Not flagged for review after the fact. Stopped before exfiltration occurs. Why CSPs and crawlers cannot solve this A Content Security Policy tells the browser which domains are allowed to load scripts. It has no visibility into what those scripts execute. A script served from a trusted domain, after being compromised through a supply chain attack, passes every CSP check and still skims card data from your checkout page. Crawlers and scanners have a different problem. Bad actors detect them and serve clean content to the scanner, then flip to malicious for real users. What the scanner saw and what your customers experienced are two different things. WAFs and CDNs operate at the network layer. They cannot see inside the browser. They check what loads, not what executes. cside sits in the delivery path of every script. It captures what scripts actually do in real user sessions. Deployment: One script tag. Under ten minutes. No managed crawl setup, no session tokens, no captcha bypasses required. Pricing: Free tier available to see your script exposure before buying. Business and Enterprise tiers for teams managing compliance, multi-domain environments, and advanced governance. Transparent pricing. No contract required to prove compliance to your QSA before you commit. Frequently asked questions 1) What makes cside different from a Content Security Policy?: A CSP controls which domains scripts can load from. It cannot analyse what those scripts execute at runtime. cside captures the full payload of every script and analyses its behaviour inside real user browsers, giving you the runtime visibility that CSP was never designed to provide. 2) What PCI DSS requirements does cside address?: cside is built specifically around requirements 6.4.3 and 11.6.1 of PCI DSS 4.0.1. It generates the authorised script inventory required by 6.4.3 and provides the ongoing change detection and monitoring required by 11.6.1, with QSA-validated audit-ready output. 3) How is cside different from a WAF or CDN security feature?: WAFs and CDNs operate at the network or server layer and have no visibility into what JavaScript executes inside a user's browser. cside operates at the browser layer. It is a dedicated product for client-side security, not a feature bolted onto an existing network tool. 4) Does cside detect AI agents and bots?: Yes. cside detects AI agents and bots targeting high-value web workflows including checkout, login, and form submission, covering a threat class that network-layer tools were not designed to address.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 11

**Who Is the Company Behind cside?**

- **Seller:** [cside](https://www.g2.com/sellers/cside)
- **Company Website:** https://cside.dev/?utm_source=thefundingletter.beehiiv.com&utm_medium=newsletter&utm_campaign=the-funding-letter-1420-may-20
- **Year Founded:** 2024
- **HQ Location:** San Francisco, US
- **LinkedIn® Page:** https://www.linkedin.com/company/csidedev (23 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 82% Small-Business, 18% Mid-Market


#### What Are cside's Pros and Cons?

**Pros:**

- Monitoring (3 reviews)
- Helpful (2 reviews)
- Threat Detection (2 reviews)
- Accuracy of Information (1 reviews)
- Alert Notifications (1 reviews)

**Cons:**

- Difficult Initiation (1 reviews)
- Navigation Issues (1 reviews)
- Not Intuitive (1 reviews)
- Not User-Friendly (1 reviews)
- UX Improvement (1 reviews)

### 6. [Fastly's Web Application and API Security](https://www.g2.com/products/fastly-s-web-application-and-api-security/reviews)
  Fastly’s AppSec solutions empower teams to mitigate threats and control bots while helping the business move faster, confidently. Protect Your Apps and APIs While Accelerating Growth with Fastly’s Next-Gen WAF, DDoS Protection, Bot Management, API Security, and more. Our solutions are designed to help you stop cyber threats from derailing your biggest moments, accelerate innovation while minimizing new risk, and govern bots without increasing user friction.


  **Average Rating:** 4.2/5.0
  **Total Reviews:** 29

**Who Is the Company Behind Fastly's Web Application and API Security?**

- **Seller:** [Fastly](https://www.g2.com/sellers/fastly)
- **Year Founded:** 2011
- **HQ Location:** San Francisco, California, United States
- **Twitter:** @Fastly (28,992 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/2602522/ (1,362 employees on LinkedIn®)
- **Ownership:** NYSE: FSLY

**Who Uses This Product?**
  - **Top Industries:** Computer Software
  - **Company Size:** 50% Mid-Market, 37% Enterprise


#### What Are Fastly's Web Application and API Security's Pros and Cons?

**Pros:**

- Security (2 reviews)
- API Management (1 reviews)
- Cybersecurity (1 reviews)
- Ease of Use (1 reviews)
- Easy Integrations (1 reviews)

**Cons:**

- Expensive (1 reviews)
- Inflexible Pricing (1 reviews)

### 7. [BlueClosure](https://www.g2.com/products/blueclosure/reviews)
  The latest Minded Security Labs project regards JavaScript Security. We have released a tool called BlueClosure which helps security testers to analyze and discover Client Side security issues.


  **Average Rating:** 3.5/5.0
  **Total Reviews:** 1

**Who Is the Company Behind BlueClosure?**

- **Seller:** [Minded Security UK](https://www.g2.com/sellers/minded-security-uk)
- **Year Founded:** 2007
- **HQ Location:** Milano, IT
- **Twitter:** @mindedsecurity (898 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/minded-security (31 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 100% Small-Business


### 8. [Imperva Client-Side Protection](https://www.g2.com/products/imperva-client-side-protection/reviews)
  As businesses rely on increasingly complex websites powered by third-party JavaScript, they expose themselves to a new breed of cyber threats that target users directly in their browsers. Imperva Client-Side Protection is designed to defend against client-side attacks, such as JavaScript-based threats, data skimming, and form-jacking, which can lead to the theft of sensitive customer information. Modern websites often integrate third-party scripts to enhance user experience, track analytics, or process payments. However, these scripts can introduce vulnerabilities that cybercriminals exploit to steal personal and financial data before it reaches servers. Imperva Client-Side Protection monitors all third-party JavaScript running on sites, detecting and blocking malicious activity in real-time without impacting website performance or user experience. With Imperva, organizations gain complete visibility and control over the client-side supply chain, ensuring that only trusted and verified scripts execute on websites. This helps prevent unauthorized data exfiltration and protects from cyber-attacks while interacting with sites. Imperva Client-Side Protection is also crucial in ensuring compliance with key data privacy regulations like PCI DSS 4.0. Protecting sensitive information at the point of entry helps organizations avoid costly fines and reputational damage associated with data breaches. The solution integrates easily with existing web security frameworks, requiring no changes to the website’s code. It offers peace of mind by securing customer data at the source, allowing organizations to focus on delivering a seamless online experience without worrying about client-side attacks.


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 1

**Who Is the Company Behind Imperva Client-Side Protection?**

- **Seller:** [Thales Group](https://www.g2.com/sellers/thales-group)
- **HQ Location:** Austin, Texas
- **Twitter:** @ThalesCloudSec (6,939 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/22579/ (1,448 employees on LinkedIn®)
- **Ownership:** EPA:HO
- **Total Revenue (USD mm):** $15,854

**Who Uses This Product?**
  - **Company Size:** 100% Small-Business


### 9. [Akamai Client-Side Protection & Compliance](https://www.g2.com/products/akamai-client-side-protection-compliance/reviews)
  Client-Side Protection & Compliance 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.



**Who Is the Company Behind Akamai Client-Side Protection & Compliance?**

- **Seller:** [Akamai Technologies](https://www.g2.com/sellers/akamai-technologies)
- **Year Founded:** 1998
- **HQ Location:** Cambridge, MA
- **Twitter:** @Akamai (115,390 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/3925/ (10,444 employees on LinkedIn®)
- **Ownership:** NASDAQ:AKAM



### 10. [Domdog](https://www.g2.com/products/domdog/reviews)
  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.



**Who Is the Company Behind Domdog?**

- **Seller:** [Domdog](https://www.g2.com/sellers/domdog)
- **HQ Location:** Delaware, US
- **LinkedIn® Page:** http://linkedin.com/company/domdogsec (6 employees on LinkedIn®)



### 11. [Dune Security](https://www.g2.com/products/dune-security/reviews)
  Dune Security is an AI-powered employee risk management platform designed to help organizations proactively identify, assess, and mitigate cybersecurity risks associated with human behavior. By analyzing user behavior, context, learning patterns, and third-party data, Dune Security quantifies individual risk levels and delivers personalized, adaptive security training to address specific vulnerabilities. This approach transforms potential weaknesses into strengths, enhancing the organization's overall security posture.



**Who Is the Company Behind Dune Security?**

- **Seller:** [Dune Security](https://www.g2.com/sellers/dune-security)
- **Year Founded:** 2023
- **HQ Location:** New York, US
- **LinkedIn® Page:** https://www.linkedin.com/company/dune-security/ (73 employees on LinkedIn®)



### 12. [Evervault](https://www.g2.com/products/evervault-2022-11-22/reviews)
  Evervault is a developer-first platform that helps payment providers and merchants collect, process, and share sensitive cardholder data without ever exposing it in plaintext. Its modular building blocks are designed to solve payment security, PCI compliance, and data protection challenges with minimal engineering effort. The platform uses a dual-custody encryption model: Evervault stores the encryption keys, while customers store the encrypted data. This separation drastically reduces breach risk and improves performance. Developers can encrypt data at the point of collection and keep it encrypted throughout its lifecycle using simple SDKs and APIs. For payments, Evervault tokenizes card details on capture, keeping merchants out of PCI DSS scope. These tokens can be sent to any PSP, offering flexibility in routing and simplifying compliance. Evervault also offers standalone products, such as 3D Secure and Network Tokens, providing teams with more control over authentication flows and payment optimization.


  **Average Rating:** 4.4/5.0
  **Total Reviews:** 17

**Who Is the Company Behind Evervault?**

- **Seller:** [Evervault](https://www.g2.com/sellers/evervault-db9d562a-5ceb-48d9-853a-0ed902b2b5e1)
- **Year Founded:** 2019
- **HQ Location:** Dublin, IE
- **Twitter:** @evervault (3,259 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/evervault/ (27 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Computer Software
  - **Company Size:** 59% Small-Business, 29% Mid-Market


### 13. [F5 Distributed Cloud Client-Side Defense](https://www.g2.com/products/f5-distributed-cloud-client-side-defense/reviews)
  F5 Distributed Cloud Client-Side Defense is a comprehensive security solution designed to protect web applications from client-side attacks such as Magecart, formjacking, digital skimming, and unauthorized personal information (PII harvesting. By proactively monitoring JavaScript behavior within the browser, it detects and mitigates malicious activities in real time, ensuring the integrity of web applications and safeguarding sensitive customer data. This service is particularly valuable for organizations aiming to maintain customer trust, comply with security standards like PCI DSS v4.0, and prevent data breaches that could damage their brand reputation. Key Features and Functionality: - Real-Time JavaScript Behavior Monitoring: Continuously observes and analyzes JavaScript execution within the browser to identify suspicious activities indicative of client-side attacks. - Insightful Dashboard Alerts: Provides actionable alerts with risk scores and detailed insights into potential threats, enabling swift response and mitigation. - One-Click Data Exfiltration Mitigation: Allows immediate blocking of unauthorized data exfiltration attempts directly from the dashboard, minimizing potential damage. - Seamless Integration: Compatible with F5 Distributed Cloud WAAP, BIG-IP (via native modules or iApp, and NGINX (using sub-filters, facilitating easy deployment within existing infrastructures. - Compliance Support: Assists organizations in meeting PCI DSS v4.0 requirements by providing tools to manage and monitor client-side scripts effectively. Primary Value and Problem Solved: F5 Distributed Cloud Client-Side Defense addresses the critical need for robust client-side security by offering real-time detection and mitigation of malicious activities within the browser. It fills the visibility gap left by traditional server-side security measures, ensuring comprehensive protection against data breaches and compliance violations. By safeguarding sensitive customer information and maintaining the integrity of web applications, it helps organizations preserve customer trust, protect their brand reputation, and adhere to stringent security standards.



**Who Is the Company Behind F5 Distributed Cloud Client-Side Defense?**

- **Seller:** [F5](https://www.g2.com/sellers/f5-f6451ada-8c47-43f5-b017-58663a045bc5)
- **HQ Location:** Seattle, Washington
- **Twitter:** @F5Networks (1,386 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/4841/ (6,133 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 100% Mid-Market


### 14. [otto](https://www.g2.com/products/otto-js-otto/reviews)
  otto-js defends your live WebApp against attacks at runtime while continuously monitoring for new risks, vulnerabilities, and out-of-compliant scripts. otto-js is an end-to-end script security & compliance solution for your cross-function team, centralizing the security, compliance, management, reporting & alerting for all your 3rd & Nth-party script dependencies. otto-js gives RegOps, WebOps, SecOps, and DevOps teams the end-to-end unified solution they need to co-manage script security & compliance with ease and speed. 3rd-party scripts and open-source components that may have been tested in the CI/CD pipeline can change, introducing new risks to your security & compliance, leaving your site open to attacks, user data compromise, and costly fines.


  **Average Rating:** 5.0/5.0
  **Total Reviews:** 1

**Who Is the Company Behind otto?**

- **Seller:** [otto-js](https://www.g2.com/sellers/otto-js)
- **Year Founded:** 2017
- **HQ Location:** Memphis, US
- **LinkedIn® Page:** https://www.linkedin.com/company/otto-javascript-security/ (2 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 100% Small-Business


### 15. [Radware Client-Side Protection](https://www.g2.com/products/radware-client-side-protection/reviews)
  Client-Side Protection Secure end users from attacks embedded in your application supply chain.



**Who Is the Company Behind Radware Client-Side Protection?**

- **Seller:** [Radware](https://www.g2.com/sellers/radware)
- **Year Founded:** 1997
- **HQ Location:** Tel Aviv, Tel Aviv
- **Twitter:** @radware (12,480 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/165642/ (1,568 employees on LinkedIn®)



### 16. [Source Defense Protect](https://www.g2.com/products/source-defense-protect/reviews)
  Automated protection against all client-side threats, Source Defense Protect is a turnkey, automated web security and data privacy compliance solution designed to protect data at the point of input. It extends web security beyond the server to the client-side (the browser) where a majority of data theft activity now occurs. It provides a simple and effective solution for data security and data privacy compliance – with 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. It acts as a sandbox for all of the JavaScript running on your websites, isolating it from the web browser in real-time and preventing any malicious code execution. Source Defense Protect provides security against all forms of client-side security incidents – keylogging, formjacking, digital skimming, Magecart, etc. Additionally, it provides compliance assurance with strict data privacy mandates such as PCI DSS, GDPR and CCPA by allowing you to enforce your policies over the dozens of third-party partners on your websites – preventing them from reading or storing data without your express authorization. The Platform requires virtually no-effort to implement, less than five hours of management per month and delivers immediate benefits to all of your stakeholders – from the Digital and eCommerce teams that need to continually enhance your web properties, to the Security teams entrusted to mitigate cyber risk, to the Compliance teams that must ensure adherence to a variety of data privacy requirements.



**Who Is the Company Behind Source Defense Protect?**

- **Seller:** [Source Defense](https://www.g2.com/sellers/source-defense)
- **Year Founded:** 2014
- **HQ Location:** Rosh Ha'Ayin, IL
- **Twitter:** @SourceDefense (836 Twitter followers)
- **LinkedIn® Page:** http://www.linkedin.com/company/source-defense (44 employees on LinkedIn®)




    ## What Is Client-Side Protection Solutions?
  [Web Security Software](https://www.g2.com/categories/web-security)
  ## What Software Categories Are Similar to Client-Side Protection Solutions?
    - [Website Security Software](https://www.g2.com/categories/website-security)