After an Airdrop Campaign Ends, Do You Still Need to Revoke Approvals?

“Only after signing did I realize something was off” — this article covers what to do after the signature. There is exactly one core idea: the type of mistake you signed determines the response — approval types (approve/Permit) can be revoked, transfer types are irreversible, and seed-phrase types must be migrated.

Sort the Type First, Then Respond

Type one: token approval (approve/increaseAllowance). The signature only granted an allowance; the tokens have not moved yet — revoking the approval on revoke.cash stops the loss (Revoke.cash documentation: revoking = approving the allowance back to 0). Type two: Permit signature (EIP-2612). The offline signature itself creates no on-chain state — it only takes effect once the scammer submits permit() to the token contract with your signature. If it has not taken effect: revoke.cash’s Signatures page lets you attempt a cancellation (usually too late); if it has taken effect: handle it as type one (revoke the approval — the documentation states migration is generally unnecessary). Type three: transfer/swap signature. Assets have already moved according to the signature — irreversible; move into the evidence-gathering and reporting workflow. Type four: seed phrase exposure. Any “I gave away my seed phrase” belongs here — migrate immediately; revoking accomplishes nothing.

Two “Don’ts” During the Response

Do not keep operating on the original wallet: if you suspect the device or extension has been tampered with, do every subsequent step on a clean device. Do not trust “recovery services” that come to you unbidden: IC3 explicitly does not contact victims proactively; anyone claiming they can recover your funds is running a second scam.

Rehearse the Response Flow (Walk Through It in Advance)

The value of a response flow lies in familiarity — mid-panic is no time to read a tutorial. It is worth running a “zero-risk drill” in calm times: open revoke.cash, find an old approval, and walk through the revocation flow (at a small gas cost); open a block explorer, look up your own address’s “signatures/transactions” history once, and practice telling the two kinds of records apart; on a fresh wallet, rehearse “a small test transfer + address verification” once. After three drills, your actions will deform far less when something actually goes wrong.

How This Connects to the “Scammed Checklist”

This article covers the actions “after the signature, before or during the loss”; if the loss is already an accomplished fact (a transfer-type signature, seed phrase exposure), switch immediately to the four-step flow (stop the loss → cut off → gather evidence → report).

A “Field Quick Reference” for Signature Types

The quick-reference card you need mid-panic (copy it into your notes): approve/increaseAllowance + an amount → approval type → revoke on revoke.cash → done; permit + a deadline → Permit type → check the Signatures page to attempt a cancellation (most likely too late) → then revoke as with the approval type; transfer/swap + your own assets → transfer type → irreversible → gather evidence and report; you entered a seed phrase → exposure type → migrate immediately; revoking accomplishes nothing. Four types, four actions — this card is the entire article, condensed.

The Relationship to Insurance / Mutual-Aid Communities

Some communities (security firms’ Discords, a wallet’s official support) can provide confirmation and guidance — but mind the boundary: any “help” that “operates for you” or “asks you to transfer funds first” is a second scam (IC3’s line: legitimate institutions will never ask for money out of the blue). The right way to seek help: submit your issue through official support channels (without your private key), file an incident report through security firms’ channels, and disclose no details outside official channels.

Risk Notice

This article is not investment advice. Judge signature types by what the wallet displays and by on-chain records; this article is not legal advice.