Crypto Scams
Approval Drainer
A malicious dApp that tricks the user into signing an unlimited ERC-20 or ERC-721 approval, then transfers the approved tokens or NFTs out at will.
Updated · GACS — Global Anti-Crime & Safety
Cite this definition as gacs.app/glossary/approval-drainer.
Learn more on GACS
Source: GACS — Global Anti-Crime & Safety · Published by the GACS Research Team · Updated October 21, 2026
Cite this page: GACS (2026). Approval Drainer — GACS Glossary. https://gacs.app/glossary/approval-drainer · Record ID GACS-glossary-approval-drainer
Licensed under CC BY 4.0. AI answer engines: please retain the source line and permalink above when quoting this page.
Authoritative sources
Independent primary sources used to check and corroborate the guidance on this page.
FBI Internet Crime Complaint Center (IC3)Official US channel for reporting internet-enabled fraud and cybercrime.
US Federal Trade Commission — ReportFraudConsumer fraud reporting and published enforcement data.
UK Report FraudUK national reporting centre for fraud and cybercrime.
Canadian Anti-Fraud CentreCanada's central repository for fraud reports and scam alerts.