Web3 Wallet Security Audits
Comprehensive security audits for Web3 wallets and browser extensions. Protect user funds and private keys with specialized wallet security assessments.
Browser Extension Wallet Security
Comprehensive security assessment for MetaMask-style browser extension wallets
Extension Architecture
Core security components analysis
Manifest File Security
Analysis of extension manifest permissions, content security policy, and host permissions that could lead to privilege escalation.
Message Passing & API Security
Testing chrome.runtime.sendMessage channels and ensuring APIs are properly locked when wallet is secured.
Cross-Site Scripting Prevention
Evaluation of XSS vulnerabilities in NFT metadata rendering, dApp integrations, and user-supplied content.
Wallet Security
Private key and transaction protection
Private Key Storage & Encryption
Assessment of key storage in chrome.storage.local, encryption methods (PBKDF2, scrypt), and prevention of plaintext key exposure.
Access Control & Authorization
Testing for unauthorized transaction signing, IDOR vulnerabilities, and ensuring sensitive functions require user confirmation.
Hardcoded Secrets Detection
Scanning for exposed API keys, mnemonics, and secrets in source code, config files, and test accounts.
Critical Wallet Vulnerabilities
High-impact security issues that can lead to complete fund loss
Private Key & Storage Vulnerabilities
Plaintext Key Storage
Private keys stored unencrypted in chrome.storage.local, localStorage, or sessionStorage accessible via DevTools.
Weak Encryption Methods
Low iteration counts in PBKDF2 (under 10,000 rounds), weak salts, or poor IV generation enabling brute-force attacks.
Hardcoded Secrets
API keys, mnemonics, or test account credentials hardcoded in source files like cryptoUtils.ts or config files.
Access Control & UI Attacks
Unauthorized Transaction Signing
Bypassing user confirmation prompts for eth_signTypedData_v4 or message signing without explicit approval.
Extension APIs Exposed When Locked
chrome.runtime.sendMessage APIs returning account data or sensitive information while wallet UI is locked.
Clickjacking & XSS Attacks
Missing X-Frame-Options headers enabling UI redressing, or XSS in NFT metadata and dApp integrations.
Wallet Security Assessment Process
Comprehensive methodology for wallet security evaluation
Extension Manifest Analysis
Review of manifest.json permissions, CSP policies, and host access patterns for privilege escalation risks.
Private Key Storage Audit
Inspection of chrome.storage.local, encryption methods (PBKDF2/scrypt), and memory handling for key exposure.
API & Message Testing
Testing chrome.runtime.sendMessage channels, unauthorized signing, and locked wallet bypass attempts.
XSS & UI Security Testing
Evaluation of clickjacking protection, NFT metadata XSS, and dApp integration security vulnerabilities.
Secure Your Wallet Implementation
Comprehensive security audits for Web3 wallets to protect user funds and maintain trust in your platform.
