The scope of the permission has to be known
In mechanisms such as ERC-20 token approval, an authorization lets an address move a quantity of tokens on your behalf. Before confirming, identify the network, the token, who receives the permission and its limit. Authorizing and making a transfer are distinct actions.
The limit and the duration depend on the mechanism. Some interfaces ask for high amounts to avoid further authorizations; certain permissions stay active until they are changed, used up or revoked. Disconnecting the wallet from a site, or stopping use of the protocol, does not necessarily cancel the authorization on record.
Exposure can continue after use
While a permission remains valid, it can allow movements within its scope without a fresh authorization for each use. If the authorized address or its contract is compromised, that earlier permission can play a part in the incident. The effect depends on the token, the limit and the logic used.
The review therefore has to take in older authorizations, not only recent interactions. Reducing or revoking a permission can limit future use, but it does not undo completed transactions and it does not remove risks from other access or other contracts.
Review without creating a new exposure
Start by identifying the active permissions and their purpose. Compare the limit with the intended use and assess which ones are still needed. Separating wallets by function also requires its own access and recovery controls; the arrangement chosen has to be understood and maintained.
Before you sign a change or a revocation, check the origin of the tool, the network and the contract shown. Read what the confirmation authorizes and consider the cost of the operation. A message that promises to review permissions does not remove the need to verify the action proposed.
