Using a separate swap wallet to contain permission risk

A separate account used for swaps can limit the assets exposed to its approvals. It works best when you keep only the balances needed for that activity and avoid granting trading permissions from long-term storage accounts.

Define the boundary you need

An ERC-20 approval is tied to a particular owner account, token and spender, as defined by the token standard. A malicious approval from one account does not automatically grant access to another account’s token balance.

Key compromise is different. Accounts derived from the same exposed recovery phrase can all be at risk. Creating another account under that same phrase is not sufficient isolation after the phrase leaks.

Make separation operational

Label accounts clearly, verify the signer in each prompt and transfer only the intended working balance. Review dormant approvals before topping up an old trading account; a future deposit can reactivate practical exposure to an unused allowance.

Do not assume a hardware wallet makes every trading account safe to blind sign. The signer still needs to review the permission.

Understand what remains shared

The same device, browser extensions and habits can expose several accounts. Separate addresses also do not guarantee privacy: public funding transfers can link them.

This is a containment practice, not a certificate that an unknown application is safe. Continue verifying domain, contracts, amounts and recipients. If the device or seed may be compromised, use a clean environment and a newly generated secret rather than merely moving to the next account in the same wallet.