What cside delivers 
How cside Protects Crypto & DeFi Platforms
Our hybrid proxy architecture provides comprehensive client-side protection specifically designed for the unique threats facing crypto and DeFi platforms.
Your User's Browser Is Where Funds Are Lost
Malicious scripts intercept wallet connections, modify transaction parameters, or steal private keys directly from the browser. By the time users notice, their funds are gone.
Analytics, price feeds, trading widgets, and marketing tools all execute JavaScript in your users' browsers. One compromised dependency can compromise your entire platform.
Attackers target npm packages, CDNs, and even wallet SDKs to inject malicious code. These attacks are designed to evade traditional security tools and target high-value transactions.
When users lose funds due to a client-side attack on your platform, they blame you - even if the attack came from a 3rd party script. Your reputation and user trust are at stake.
Our hybrid proxy architecture provides comprehensive client-side protection specifically designed for the unique threats facing crypto and DeFi platforms.
Our hybrid proxy monitors the activity of every script, preventing malicious code from stealing wallet or payment data.
PCI 6.4.3 & 11.6.1 requirements with script inventory, change detection, justifications, and audit-ready reports.
Identify what personal data each third-party script has access to and where it's sent. Stay compliant with GDPR and prevent PII leaks.
Reduce friendly fraud (chargebacks) with device fingerprinting as evidence to block disputes.
High value transactions make every compromised browser session a lucrative target
Registration flows KYC and personal data that can be harvested
Third party services (trading widgets, analytics, integrations) expand the attack surface
Client-side scripts often touch wallet IDs, private keys, and addresses
"cside tells me everything I need to know about a script, and makes sure they are safe to show to the user. It's really made me realize how big of a problem 3rd party script security is, and there are no other solutions I've tried that dive as deep as cside."
Our experts can conduct a client-side vulnerability assessment and show you how to protect your crypto platform from client-side attacks.
Common Client-Side Attacks on Crypto Platforms
Scripts that intercept wallet connections and drain funds by modifying transaction parameters or stealing private keys
Malicious code that changes recipient addresses, amounts, or smart contract interactions in real-time
Compromised npm packages, wallet SDKs, or Web3 libraries that inject malicious code into your dApp
Scripts that monitor clipboard and replace copied wallet addresses with attacker-controlled addresses
Attackers steal session tokens to gain unauthorized access to user accounts and trading capabilities
Fake wallet connection prompts or approval requests injected into the page to trick users into signing malicious transactions
Our hybrid proxy delivers advantages traditional tools can't match.
| vs. Crawler-Based Solutions | vs. Content-Security Policy (CSP) | vs. Client-Side Agents |
|---|---|---|
| Sees real user behavior, not sanitized crawler views | Monitors script payloads, not just sources | Undetectable monitoring attackers can't bypass |
| Catches attacks aimed at specific segments | Detects breaches at trusted third-party providers | Complete historical script behavior tracking |
| Detects threats between periodic scans | Handles dynamic scripts CSPs can't control | Future-proof against evolving techniques |
cside monitors all JavaScript execution in real-time and detects when scripts attempt to access wallet APIs or modify transaction parameters. Our behavioral analysis identifies malicious patterns before funds can be stolen.
Yes. cside tracks every script loaded on your platform, including npm packages and Web3 SDKs. When a dependency is compromised, we detect the malicious behavior immediately and can block it before it reaches users.
cside is wallet-agnostic and works with all major wallet providers including MetaMask, WalletConnect, Coinbase Wallet, and others. We monitor the browser-level interactions regardless of which wallet your users choose.