Fake 'token migration' permit drains wallets: warning signs and how to protect yourself
Reviewed 2026-06-25
Key fact: A 'migration' or 'upgrade' that asks you to sign a Permit2 or approval message you didn't start yourself.
This guide explains a real Web3 wallet threat in plain language so you can recognize it and stay safe. It shows you what the threat looks like and how to avoid it — not how to carry it out.
What happened?
A fake-site trick site posing as an official token migration asked users to sign a Permit2 message. Signing handed the attacker unlimited spending approval over the target's tokens. Understanding how this presents itself to a normal user is the first step to avoiding it. Threats like this succeed because they look completely ordinary and create a sense of urgency, pushing people to act before they check.
The warning sign to remember
A 'migration' or 'upgrade' that asks you to sign a Permit2 or approval message you didn't start yourself.
If you ever see this, stop and verify through the official app yourself. Legitimate services do not pressure you to sign approvals or confirm sensitive actions through links sent in messages, emails, or ads. When something feels rushed, that urgency is itself a warning sign.
How to protect yourself
Never sign approval or Permit2 requests from links in DMs, emails, or ads. Open the real app yourself. Revoke unused allowances.
Beyond those steps, a few habits keep you safe in general:
- Open apps by typing the address yourself or using a bookmark — never by clicking a link sent to you.
- Review every signature and approval request carefully before signing.
- Revoke token approvals you no longer use. You can check and revoke at any major wallet scanner.
- If something feels urgent, that urgency is a signal to slow down, not speed up.
Why does this matter?
Wallet threats are one of the most common ways people lose access to their crypto, and almost all of them rely on a moment of haste rather than any technical break-in. Learning the one warning sign for each common threat type is the most reliable, free protection available to any user. You do not need special software — just the habit of pausing and checking.
Frequently asked questions
How do I know if a request is safe to sign?
If you did not start the action yourself inside the official app, treat any signature or approval request as suspicious. Verify independently before signing — open the app directly and see if the same prompt appears.
What should I do if I already interacted with something suspicious?
Review and revoke token approvals you do not recognize. Move funds to a fresh wallet if you suspect your seed phrase was exposed. Watch for follow-up attempts — bad actors often try again after an initial contact.
Is there a quick way to check my wallet?
Yes — open the Defender mini-app in Telegram for a fast, free wallet check. No installation needed.