Metamask
🔍 Security Report Available View on Chrome Web StoreChrome will indicate if you already have this installed.
Overview
MetaMask is the world’s most secure and flexible crypto wallet, trusted by millions of users to buy, sell, and swap digital assets. Manage your portfolio, interact with dapps, and jump into the decentralized web.
Crypto made easy
– Buy, sell, swap, and earn directly in your wallet
– Choose from thousands of tokens
– Connect to dapps across multiple chains
– Try DeFi, buy meme coins, collect NFTs, explore web3 gaming, and more
Advanced industry-leading security protects you
– Know what you’re signing before you transact
– Live threat surveillance safeguards your wallet
– Designed for privacy, control what you share
– MEV and front-running protection
Live support 24/7
– Around-the-clock support from our (human!) customer service experts
SUPPORTED NETWORKS
Ethereum, Linea, BSC, Base, Arbitrum, Solana, Bitcoin, Cosmos, Avalanche, Cardano, XRP, Polygon, BNB, Starknet, and more.
SUPPORTED TOKENS
Ether (ETH), USD Coin (USDC), Tether (USDT), Wrapped Bitcoin (wBTC), Shiba Inu (SHIB), Pepe (PEPE), Dai (DAI), Dogecoin (DOGE), Cronos (CRO), Celo (CELO), and thousands more.
Download MetaMask today.
Because MetaMask adds functionality to your traditional browser, we require permission to read and write to any webpage. You can always view our source code the way you would any Chrome extension, or on Github:
https://github.com/MetaMask
Our privacy policy: https://consensys.net/privacy-policy/
Terms of use: https://consensys.net/terms-of-use/
Tags
Privacy Practices
Security Analysis — Metamask
Code Patterns Detected
External Connections
What This Extension Does
MetaMask is a cryptocurrency wallet extension that allows users to manage digital assets, interact with decentralized applications (dapps), and connect to multiple blockchain networks. It solves the problem of needing a secure yet accessible way to engage with web3 technologies directly from the browser. It's designed for crypto users, developers, and anyone looking to explore decentralized finance (DeFi) or NFTs.
Your Data
The extension communicates with several external domains to fetch blockchain data, manage tokens, and support wallet functionality. These connections are made over standard web protocols, likely using HTTPS for encryption where applicable.
Technical Details
Code Findings
The extension uses code obfuscation techniques that make it harder to read the actual functionality. While not inherently malicious, this can be a red flag if used to hide suspicious behavior.
Technical: JavaScript files contain calls to String.fromCharCode and charCodeAt, which are often used in JavaScript-based obfuscation methods to encode strings or logic. This pattern was found in 2 of the extension's JS files (totaling 410 KB).
💡 Obfuscation is a common practice in browser extensions for protecting intellectual property and making reverse-engineering more difficult, especially when dealing with complex cryptographic operations.
MetaMask is a widely-used and well-known extension that provides essential crypto wallet capabilities for interacting with decentralized applications. It does not request any high-risk permissions, but uses obfuscation techniques which may raise concerns in security-sensitive environments. Users should feel confident using it if they trust the developer and understand its purpose, though caution is advised when reviewing code behavior or network activity.
