Common DeFi Scams and How to Avoid Them

The DeFi Scam Landscape

DeFi's permissionless nature is both its strength and weakness. Anyone can launch a protocol. Including scammers. Billions of dollars have been lost to various scams, from elaborate rug pulls to simple phishing attacks. Understanding common patterns helps you protect yourself.

This guide covers the most prevalent scams and practical steps to avoid them. Vigilance is your best defense.

Types of DeFi Scams

Rug Pulls

1. Team launches new DeFi protocol with attractive yields
2. Users deposit funds
3. Team uses admin keys to withdraw all liquidity
4. Token becomes worthless; users lose everything

• Anonymous team with new protocol
• Unverified contracts
• No timelock on admin functions
• Unrealistic promises

• Check contract ownership and permissions
• Verify timelocks and multisig
• Use established protocols
• Start small with new projects

Honeypot Tokens

1. Scammer creates token with hidden sell restrictions
2. Token appears to pump in price
3. Users buy, expecting to profit
4. When they try to sell, transactions fail
5. Scammer drains liquidity

• Only buys happening, no sells
• Unusual error messages when selling
• New token with suspicious contract code
• Too-good-to-be-true gains

• Check sell transactions on block explorer
• Use token scanner tools (TokenSniffer)
• Never buy tokens from random links
• Avoid tokens promoted in DMs

Phishing Attacks

• Fake protocol websites (slight URL misspellings)
• "Support" DMs on Discord/Twitter
• Fake airdrops requiring wallet connection
• Malicious token approval requests

• uniswap.org → uniswąp.org (different character)
• "Connect wallet to claim airdrop" → drains funds
• "Your tokens are stuck, connect here" → phishing

• Bookmark official sites; don't click links
• Never share seed phrase with anyone
• Verify URLs carefully
• Real support never DMs first

Approval Exploits

1. You interact with a scam site
2. You approve "unlimited" spending for a token
3. Later, the scammer uses that approval to steal your tokens
4. Works even if you didn't send tokens

• Revoke unused approvals (revoke.cash)
• Never approve unlimited amounts
• Check what you're approving before signing
• Use separate wallets for risky activities

Fake Airdrops

• "Claim your airdrop" requiring seed phrase → instant drain
• Tokens appearing in wallet that require interaction → approval exploit
• Fake airdrop sites that phish wallet connection
• "Dust attacks" with small token amounts

• Never enter seed phrase to claim anything
• Don't interact with unknown tokens in wallet
• Verify airdrops through official channels
• If it seems too easy, it's probably a scam

Ponzi Schemes

• Unsustainably high APYs (1000%+)
• Vague revenue model
• Heavy referral bonuses
• Pressure to reinvest earnings

1. New deposits slow down
2. Not enough to pay promised yields
3. Protocol fails or team exits
4. Late investors lose everything

• Ask "where does the yield come from?"
• If you can't explain the revenue model, don't invest
• Be skeptical of referral schemes
• Remember: sustainable yields are 5-30%, not 500%

Practical Protection Strategies

Wallet Hygiene

• Hot wallet: Small amounts for daily use
• Cold storage: Main holdings, hardware wallet
• Burner wallet: For testing new protocols

• Review approvals regularly (revoke.cash)
• Revoke old/unused approvals
• Set specific limits, not unlimited

Verification Habits

• Verify URL is official (bookmark trusted sites)
• Check contract address against official sources
• Look up protocol on DeFi Llama

• Read what you're approving
• Understand the transaction
• If unclear, don't sign

Information Sources

• Official protocol documentation
• Verified Twitter accounts
• Reputable DeFi news sources

• DMs from "support"
• Random links in Telegram/Discord
• Too-good-to-be-true opportunities

What to Do If Scammed

Immediate Actions

1. Revoke approvals: Use revoke.cash immediately
2. Move remaining funds: Transfer to a secure wallet
3. Document everything: Screenshots, transactions, addresses
4. Don't interact further: Don't try to "recover" funds through more transactions

Reporting

• Report to blockchain security firms (Chainabuse)
• Alert the community on social media
• File reports with relevant authorities (IC3, FTC)
• Warn others in protocol communities

Recovery (Realistic Expectations)

• Most stolen crypto is unrecoverable
• "Recovery services" are often scams themselves
• Some insurance protocols may cover certain losses
• Legal action rarely succeeds for crypto theft

FAQ

Don't interact with them. They're likely dust attacks designed to get you to connect to a scam site. Hide them in your wallet interface and ignore.

Almost certainly not. Real support never DMs first. Official teams use public channels. Treat all "help" DMs as scam attempts.

Immediately check revoke.cash for suspicious approvals. Revoke any approvals you don't recognize. Move funds to a different wallet if concerned.

Usually not. Some protocols have been sued successfully, but recovery is rare. Prevention is your only reliable protection.

Related Topics

Learn about smart contract verification, explore wallet security best practices, and understand how to evaluate protocol risks.

. -

[Explore Fensory →](https://www.fensory.com)