Coinbase Wallet Extension brings a self-custody wallet into your browser to explore decentralized applications. Before installing, verify the extension source and publisher through Coinbase’s official channels. A logo alone is not proof of authenticity. After setup, take time to understand the recovery phrase. It is the master key to the wallet: anyone who obtains it may control the assets, and losing it can mean losing access. Store it offline in a secure place, and never share it with support staff, websites, or people contacting you unexpectedly. When connecting to an application, check its domain and review the permissions requested. A connection does not automatically mean an application can move funds, but signing a transaction or approval may grant access. Read the network, destination, asset, and fee details on every confirmation screen. If something is unclear, pause and verify. Self-custody offers control alongside responsibility. Keep your browser and operating system updated, use a device, and be cautious of unsolicited links, airdrops, and warnings. Consider a wallet for experimentation, and only use funds you can afford to lose. Digital assets carry volatility and technical risks; this guide is educational, not financial advice. Product features may change, so consult official documentation before acting.