Wallet scanner
LiveCheck a wallet for risky approvals and contract exposure
A risk score, the findings behind it, and a prioritised list of what to fix first.
Open toolCrypto Security Center
Token approval checker
Approvals are the permissions most people forget they granted. Paste a public wallet address to see which contracts can still spend its tokens, and how much.
How to work through your approvals
- 1. Start with unlimited allowances. These have no ceiling, so they carry the most consequence if the spender is compromised.
- 2. Then anything you do not recognise. If you cannot name the application behind a spender, you cannot judge the risk.
- 3. Then anything dormant. Applications you stopped using still hold live permissions.
- 4. Keep what you actively use. Revoking an approval you need just means approving again next time, and paying gas twice.
If a wallet may already be compromised
Revoking approvals does not help if an attacker has the private key — they can simply approve again. Move the remaining assets to a new wallet created on a clean device first, then investigate the old address.
Continue
Related security checks
Transaction explainer
LiveUnderstand what a transaction actually did
A readable explanation of the transaction and the permissions it created.
Open toolToken risk scanner
LiveReview a token contract before you interact with it
A contract-level risk assessment with the specific code patterns detected.
Open toolQuestions
Frequently asked
- What is a token approval?
- An approval is a standing permission you give a smart contract to spend a specific token from your wallet. Decentralised exchanges need it to execute a swap. The permission does not expire on its own and stays in place after the transaction that created it.
- Why is an unlimited approval risky?
- An unlimited allowance lets the approved contract move any amount of that token from your wallet, at any time, without a new confirmation. If that contract is later exploited or was malicious from the start, the approval is the mechanism used to take the tokens.
- How do I revoke an approval?
- Revoking is an on-chain transaction you send from your own wallet — you set the allowance for that token and spender back to zero, and pay gas to do it. Many wallets now include an approvals screen. We deliberately do not offer to do it for you, because that would require a signature.
- Do you show approvals that were already revoked?
- No. We read the current allowance directly from each token contract, so approvals that were spent down or revoked do not appear in the list.
Important
Cyber Security Space provides automated security analysis based on available blockchain and threat intelligence data. Results may be incomplete or inaccurate and should not be treated as a guarantee of safety, financial advice, or investment advice. This score reflects the security signals currently detected. A low-risk score does not guarantee that a wallet or transaction is safe.
Nothing on this page is financial or investment advice.