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If you think your cryptocurrency wallet or DeFi account has been compromised, first verify the activity and identify what may be exposed. If your recovery phrase or private key may be known to someone else, create a new wallet with a new phrase on a different device or browser profile, move any remaining funds if it is safe to do so, and stop using the old wallet. If the issue appears to be a token approval or suspicious signature instead, address that permission separately. Preserve transaction details, secure affected devices and accounts, and report the incident through verified channels. Recovery is not guaranteed.
What to do first
Move quickly, but do not rush into sending funds or signing more requests. The right response depends on whether someone has control of your wallet, a specific token permission, a signature authorization, your device, or a custodial account login.
- Verify the activity. Check the transaction’s date and time, recipient address, dapp, and amount or value in a block explorer. MetaMask advises checking these details because an unfamiliar transaction is not automatically unauthorized.
- Act on the likely exposure. If your recovery phrase or private key may have been exposed, prioritize a new wallet and a safe transfer of any remaining assets. If the evidence points to a token approval, review and revoke that permission. If a signature may be involved, treat that as a separate risk.
- Stop interacting with suspicious sites or messages. Do not sign additional requests from a site you suspect is malicious, and do not trust unsolicited messages offering support or recovery. Reach wallet, exchange, or provider help through a channel you verify independently.
- Secure affected devices and linked accounts. Review browser history and scan the computer if malware or a fake extension may be involved. For a custodial account or linked provider, change the password and set alerts using its independently verified official channel.
- Preserve evidence and report promptly. Record transaction hashes, timestamps, values, sending and receiving addresses, and relevant exchange or provider details before they are difficult to find.
Identify what may be compromised
These situations need different fixes. Revoking a permission does not restore transferred funds or make a stolen recovery phrase safe; changing an account password does not secure a self-custodied wallet whose private key is exposed.
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| Possible exposure | What it means | Response and limits |
|---|---|---|
| Recovery phrase or private key | Someone who has the secret may control the wallet and wallets derived from that phrase. MetaMask advises treating a suspected exposure as a compromised wallet. | Create a genuinely new wallet with a new recovery phrase on another device or browser profile. Move remaining funds if possible, then stop using the old wallet and accounts derived from the exposed phrase. This does not reverse transfers that have already occurred. |
| Token approval | An approval lets a dapp or contract move the specified kind and amount of token, according to the permission granted. | Review permissions through a wallet or provider interface reached independently, and revoke permissions you do not trust. This can block the specific permission; it cannot restore funds already transferred or secure an exposed private key. |
| Suspicious signature | A signature can authorize token spending without a network fee. Uniswap Labs notes that Permit2-related flows are one example. | Do not sign more requests from the suspicious site. Assess signature risk separately from ordinary on-chain approvals and consult current official guidance from the relevant wallet or protocol. |
| Device, browser, or extension | Malware, phishing, or a fake wallet extension may expose secrets or enable unauthorized activity. | Review browser history and scan the computer, as MetaMask advises. If a secret phrase or private key may have been exposed, follow the new-wallet response rather than relying on a device scan alone. |
| Custodial account or linked provider | A person with access to a service account may be able to act through that provider; the response differs from securing a self-custodied wallet. | Contact the provider through a verified official channel, change the password, and set alerts. Never give a password, recovery phrase, or one-time code to an unsolicited caller or message. |
If your recovery phrase or private key may be exposed
Treat the old wallet as compromised even if you have not yet seen an unauthorized transfer. A password change or approval revocation cannot take control away from someone who has the wallet’s secret.
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- Set up a new wallet on a different device or browser profile, and generate a new recovery phrase. Do not import the old phrase into the new wallet.
- If the old wallet was linked to a Google or Apple account that may also be compromised, do not use that same linked account for the new wallet.
- Move remaining funds to the new wallet if you can do so safely. MetaMask warns that a suspected sweeper script may immediately take gas sent to a compromised account, so do not blindly add gas funds to it.
- Stop using the old wallet and any accounts derived from its exposed phrase.
If you cannot move assets safely, avoid improvising by sending more funds to the compromised address. Contact the relevant wallet or service provider through a channel you verify independently for current guidance.
If you approved a token allowance or signed a request
Review and revoke a token approval
Use a wallet or provider interface reached independently to inspect token permissions, then revoke any authorization you do not trust. Revocation addresses that permission only. It does not undo a transfer that has already completed, and it does not protect a wallet if its recovery phrase or private key is exposed.
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Consider signatures separately
Some signatures authorize token spending without an on-chain transaction fee, so a review of ordinary paid on-chain approvals may not reveal every relevant authorization. If you suspect you signed a malicious request, do not sign additional prompts from that site. Check current official directions from the wallet or protocol involved rather than assuming that revoking an ordinary approval resolves the signature risk.
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Secure devices and service accounts
Possible compromise routes include malware, phishing, disclosure of a secret phrase or private key, excessive contract permissions, and fake wallet extensions. MetaMask advises reviewing browser history and scanning the computer. If a custodial account or linked provider is involved, contact it through an independently verified official channel, change the password, and set alerts. Never share a password, recovery phrase, or one-time code with someone who contacts you unexpectedly.
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Preserve evidence and report the incident
Keep a record of the transaction hashes, timestamps, values, sending and receiving addresses, and any exchange or provider information connected to the event. Save relevant messages or other account details that may help explain what happened.
For incidents in the United States, FBI guidance asks victims to report promptly to the Internet Crime Complaint Center (IC3) or contact a local FBI field office, and to provide available transaction information. The FBI and IC3 routes, as well as FTC consumer guidance, are U.S.-specific. Elsewhere, use local law-enforcement and consumer-protection reporting channels and notify affected wallet, exchange, or financial-service providers.
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What recovery can and cannot mean
Reporting and containment may help protect remaining assets or document what happened, but they do not guarantee that stolen cryptocurrency will be returned. MetaMask states that transactions cannot be reversed and missing funds cannot be restored through its self-custodial service; that statement concerns its service, not every provider or possible legal outcome. The FTC notes that crypto transfers can be difficult to recover and do not have the same legal protections as card payments.
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