To keep your Coinbase account safe follow these points:
Do not share your password and ensure you have a strong password to your account.
Always use Two-Factor Authentication (2FA).
You should use the Coinbase Vault option.
You can lock your account while seeing doubtful activity.
Digital Security Notifications.
Cold Storage Wallet is like a crypto wattlet.
You can cancel your transactions.
Do not share your account details or log in using public Wi-Fi.
Following this guide you can secure your Coinbase account, do you have doubt on Is Coinbase Legit you can visit it.