Definition ∞ Token Approval Revocation is the act of canceling a previously granted permission for a smart contract or third-party application to spend a user’s tokens on their behalf. This action is crucial for security, as it removes potential avenues for unauthorized asset transfers if the approved contract is exploited. It allows users to regain granular control over their digital asset permissions.
Context ∞ The importance of token approval revocation is frequently highlighted in cryptocurrency security news, especially after exploits where malicious contracts drain user funds. Users are increasingly advised to regularly review and revoke unnecessary token approvals to minimize exposure to smart contract risks. Future wallet interfaces are expected to offer more intuitive and automated tools for managing and revoking these permissions, enhancing user security.
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