$12.5B
FTC-reported fraud losses in 2024
FTC says consumers reported losing $12.5 billion to fraud in 2024.
token approval exploit airdrop scam
Malicious airdrop claims trick users into signing broad token approval transactions that allow scammers to transfer any amount of the approved token from the victim wallet at any time.
“airdrop scam”
↑ 459%Key indicators
Usually targetsDeFi participants
Often hitsTech workers and developers
Common regionUnited States
Last updated2026-04-04
Estimated impact
$1.4K
median reported loss
Typical range$90 – $9.0K
Recovery rate~15%
Scam breakdown
1
Scammers distribute tokens or NFTs to wallets as bait, linking to a claim site where users must approve a contract interaction
2
The approval transaction grants the malicious contract permission to transfer an unlimited amount of the victim existing tokens
3
The scammer executes a transferFrom function to drain the victim wallet of the approved tokens at any time after the approval is signed
What to do first
Review every transaction carefully in your wallet and never approve unlimited token spending for unfamiliar contracts
Related terms
unlimited approval scamERC-20 approval exploittoken allowance drainFake airdrop scamsWebsiteStableDeFi participantsCrypto usersNew crypto usersTech workers and developersOnline shoppersUnited StatesSingaporeUnited Kingdomunlimited approval scamERC-20 approval exploit
Real-world example
How this scam plays out in practice
Based on reported patterns. Names and details are illustrative.
The setup
James, 35, a defi participants, encountered what appeared to be a legitimate fake airdrop scams situation while using Website. Scammers distribute tokens or NFTs to wallets as bait, linking to a claim site where users must approve a contract interaction
Step 2
What happened next was calculated: The approval transaction grants the malicious contract permission to transfer an unlimited amount of the victim existing tokens
Step 3
The pressure escalated quickly: The scammer executes a transferFrom function to drain the victim wallet of the approved tokens at any time after the approval is signed
The outcome
James realized something was wrong when claim transaction requests approval to spend an unlimited amount of your tokens rather than a specific amount. By that point, significant damage had already been done — money sent, personal information shared, or trust exploited.
The lesson
Review every transaction carefully in your wallet and never approve unlimited token spending for unfamiliar contracts James's experience shows why claim transaction requests approval to spend an unlimited amount of your tokens rather than a specific amount and smart contract address is unverified on block explorers like etherscan are the clearest early warning signs.
How to identify it
- Claim transaction requests approval to spend an unlimited amount of your tokens rather than a specific amount
- Smart contract address is unverified on block explorers like Etherscan
- Project has no audit from a recognized security firm
- Pause before paying, clicking, or sharing information. Scammers rely on speed.
- Verify the sender, company, or agency using a phone number or website you already know is legitimate.
- Treat secrecy, urgency, and off-platform payment requests as strong scam signals.
What to do now
- ✓Review every transaction carefully in your wallet and never approve unlimited token spending for unfamiliar contracts
- ✓Check smart contract addresses on Etherscan or similar block explorers and look for verification and audit reports
- ✓Use Revoke.cash or similar tools to audit and remove unnecessary token approvals from your wallet
What to save before reporting
- ✓Save the message, profile, phone number, email, or URL that was used.
- ✓Keep payment confirmations, receipts, and account alerts before you dispute or delete anything.
- ✓Write down the timeline while the details are still fresh.
How big is this problem
You are not alone — this scam affects millions of people.
These numbers come from government agencies and official reports. If you have been affected, know that this is a widespread problem — not something that only happens to careless people.
FTC 2024 fraud losses
Imposters
Most common FTC fraud category in 2024
FTC says imposter scams remained the most commonly reported fraud category in 2024.
History and evolution
- This scam family tends to persist because the social-engineering pressure works even when the exact scripts, platforms, and payment methods change.
- The specific packaging evolves over time, but the core pattern usually stays the same: create urgency, control the channel, and push action before verification.
- ScamSniffer reported that wallet drainer attacks using token approval exploits stole approximately 295 million USD from over 324,000 victims in 2023
Recovery and follow-up
- ✓Save the messages, receipts, account alerts, and transaction details before you block or delete anything.
- ✓Report the scam through the official platform or government channel that best matches where it happened.
- ✓Review every transaction carefully in your wallet and never approve unlimited token spending for unfamiliar contracts
- ✓Check smart contract addresses on Etherscan or similar block explorers and look for verification and audit reports
- ✓Use Revoke.cash or similar tools to audit and remove unnecessary token approvals from your wallet
Why this pattern keeps working
Even when the story changes, most scams still use the same pressure pattern: urgency, authority, and a request to move money or data fast.
ScamSniffer reported that wallet drainer attacks using token approval exploits stole approximately 295 million USD from over 324,000 victims in 2023
OpenScam research
Where to report it
If you have been targeted by this scam, reporting it helps authorities track the pattern and protect others. United States has dedicated agencies that handle fraud reports.
ReportFraud.gov
Federal Trade Commission
Central U.S. consumer fraud reporting portal.
File an IC3 complaint
FBI Internet Crime Complaint Center
FBI portal for internet-enabled crime reports.
Start identity theft recovery
IdentityTheft.gov
Official U.S. identity theft recovery plan builder.
Explore further
Understand the bigger picture
Who is most at risk
Who this scam targets
Primary targets
DeFi participants, Crypto users, New crypto users
Geographic concentration
United States, Singapore, United Kingdom
Primary channel
Website — Fake airdrop scams
Why this group is vulnerable
DeFi participants are particularly vulnerable because this scam exploits trust in familiar brands, authority figures, and time-sensitive decisions. The ongoing nature of reports suggests that awareness among this demographic remains low.
Sources and methodology
How we verify this information
OpenScam tracks scam patterns using a combination of government consumer protection databases (FTC, IC3, Action Fraud), platform-specific fraud reports, and verified consumer complaint data. Each entry is cross-referenced against at least two independent sources before publication.
Severity ratings are based on financial impact potential, reversibility of damage, and volume of reports across multiple reporting channels. Trend velocity reflects the rate of change in report volume over the most recent 90-day window.
This page was last verified on 2026-04-04. Red flags, recovery steps, and reporting resources are reviewed quarterly against current agency guidance.
Evidence and indicators
- ScamSniffer reported that wallet drainer attacks using token approval exploits stole approximately 295 million USD from over 324,000 victims in 2023
Source notes
- OpenScam research
Frequently asked questions
Common questions about token approval exploit airdrop scam
How does the token approval exploit airdrop scam work?+
Scammers distribute tokens or NFTs to wallets as bait, linking to a claim site where users must approve a contract interaction The approval transaction grants the malicious contract permission to transfer an unlimited amount of the victim existing tokens The scammer executes a transferFrom function to drain the victim wallet of the approved tokens at any time after the approval is signed
What are the warning signs of token approval exploit airdrop scam?+
Claim transaction requests approval to spend an unlimited amount of your tokens rather than a specific amount Smart contract address is unverified on block explorers like Etherscan Project has no audit from a recognized security firm
What should I do if I encounter token approval exploit airdrop scam?+
Review every transaction carefully in your wallet and never approve unlimited token spending for unfamiliar contracts Check smart contract addresses on Etherscan or similar block explorers and look for verification and audit reports Use Revoke.cash or similar tools to audit and remove unnecessary token approvals from your wallet
Who is most at risk for token approval exploit airdrop scam?+
This scam primarily targets DeFi participants, Crypto users, New crypto users. It is most commonly reported in United States, Singapore, United Kingdom and typically appears on Website.
Is token approval exploit airdrop scam still active?+
token approval exploit airdrop scam is currently on our watch list. It has been reported across US, SG, UK. Last updated 2026-04-04.
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Help someone avoid this scam.
Scammers succeed because people do not talk about it. If you or someone you know has been affected, there is no shame in it — it happens to millions of people every year. Share this page with friends and family so they know what to look for.
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