# c/side c/side is a Runtime Application Self-Protection product by C/side. It runs in the cloud. Pricing is commercial (contact sales). Client-side platform securing browser scripts, detecting fraud & ensuring PCI compliance. Checked October 2026. ## What is c/side? c/side is a client-side security platform that monitors and secures third-party scripts running in website visitors' browsers. Unlike server-side security tools such as WAFs, c/side focuses on what executes in the end user's browser environment. The platform inspects scripts before they reach users, analyzes what each visitor's browser executes, and detects targeted attacks that may only occur for specific users, times, or locations. It maintains a full historical record of every script payload to support incident response. Core use cases include: - Credit card skimming prevention (Magecart-style attacks) - PCI DSS 4.0.1 compliance automation (requirements 6.4.3 and 11.6.1), including script inventories, HTTP header monitoring, and audit-ready reports - Outbound data privacy monitoring and cookie tracking - Chargeback fraud evidence collection - Job application fraud detection (Applicant Check) - VPN detection - AI agent detection The platform is designed to detect attacks that bypass Content Security Policy (CSP), including shadow DOM tricks and obfuscated code. It includes a privacy monitoring module (Privacy Watch) and a chargeback evidence solution. c/side holds GDPR, SOC 2, and PCI DSS certifications. It is available on the AWS Marketplace and integrates with compliance platforms such as Vanta. Every customer receives a shared Slack or Microsoft Teams channel for direct access to the security team. Tags: Browser Security, Third Party Security, Web Security, Bot Protection, Content Security Policy ## Where it fits in your security program (NIST CSF 2.0) - [Protect](https://cybersectools.com/guides/building-protect-program-small-team): helps you prevent attacks and keep data safe. - [Detect](https://cybersectools.com/guides/building-detect-program-small-team): helps you spot attacks and unusual activity. ## Quick facts - Category: [Application Security](https://cybersectools.com/categories/application-security) ยท [Runtime Application Self-Protection](https://cybersectools.com/categories/rasp) - Vendor: [C/side](https://cybersectools.com/companies/cside) - Deployment: Cloud - Company size fit: SMB, Mid-Market, Enterprise - Pricing model: Commercial (contact sales) - Features: 10 listed - Integrations: 6 listed - Website: cside.com The full feature and integration lists are on the page for signed-in visitors. ## Where it ranks No shortlist covers this product's category yet. The closest is [Best Application Security Solutions for Business](https://cybersectools.com/shortlists/best-application-security-solutions). ## c/side FAQ ### What is c/side? c/side is a product by C/side in the Runtime Application Self-Protection category. It covers Browser Security, Third Party Security and Web Security. ### What is the pricing for c/side? c/side is a commercial product. For pricing, visit https://cside.com/ or contact C/side. ### What are alternatives to c/side? Alternatives to c/side listed on CybersecTools: 1. [Source Defense How it works](https://cybersectools.com/tools/source-defense-how-it-works) - Client-side security for websites against 3rd party vendor attacks (Commercial) 2. [Approov Runtime Application Self Protection](https://cybersectools.com/tools/approov-protect-connected-car-apps) - RASP solution securing mobile apps and APIs across Android, iOS, and HarmonyOS at runtime. (Commercial) 3. [Jscrambler Webpage Integrity](https://cybersectools.com/tools/jscrambler-code-integrity) - Client-side platform for controlling third-party script behavior and preventing data (Commercial) 4. [NonaShield](https://cybersectools.com/tools/nonashield-platform) - Mobile fraud & device trust platform with 9-layer RASP, hardware binding & agentic AI. (Commercial) 5. [Aikido Zen](https://cybersectools.com/tools/aikido-zen) - Runtime application security library blocking zero-days & OWASP Top 10 attacks (Commercial) Compare all c/side alternatives at [https://cybersectools.com/alternatives/cside](https://cybersectools.com/alternatives/cside) ### What deployment and organization size does c/side fit? c/side is available as a cloud service. It is listed for small businesses, mid-market companies and enterprises. Pricing is commercial. Ask C/side for pricing and support terms. ## Compare c/side with similar solutions - [c/side vs Source Defense How it works](https://cybersectools.com/compare/source-defense-how-it-works-vs-cside) - [c/side vs Approov Runtime Application Self Protection](https://cybersectools.com/compare/approov-protect-connected-car-apps-vs-cside) - [c/side vs Jscrambler Webpage Integrity](https://cybersectools.com/compare/cside-vs-jscrambler-code-integrity) All alternatives to c/side: [/alternatives/cside](https://cybersectools.com/alternatives/cside) --- Source: https://cybersectools.com/tools/cside For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any compare page has a Markdown copy too (add .md to its URL). More on c/side and C/side: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=product-md