Using DEXs Safely

DEXs put you in full control — which means you're also fully responsible for your own security. Here's how to trade on DEXs without falling victim to common scams and pitfalls.

1. Verify Token Contracts

Because anyone can create a token with any name on a DEX, scammers regularly create fake tokens that impersonate legitimate projects. Before trading:

• Always verify the token contract address from the official project website or CoinGecko/CoinMarketCap.
• Never trust search results: Scammers create tokens with identical names and logos.
• Check liquidity: Legitimate tokens usually have significant liquidity. Low liquidity is a red flag.

2. Understand Slippage

Slippage is the difference between the expected price and the actual price you get. On DEXs:

• Set slippage tolerance: Usually 0.5-1% for major tokens. Higher for volatile or low-liquidity tokens.
• Watch for sandwich attacks: Bots can front-run your transaction, buying before you and selling after, making you pay more. Low slippage settings help protect against this.

3. Manage Token Approvals

Before trading on a DEX, you must "approve" the smart contract to spend your tokens. This creates a permission that persists:

• Revoke unused approvals: Use tools like Revoke.cash to review and revoke token approvals you no longer need.
• Approve exact amounts: When possible, only approve the exact amount you're trading, not "unlimited."

4. Check for Honeypot Tokens

A honeypot is a token that you can buy but cannot sell. The smart contract is coded to block sell transactions. Before buying any unfamiliar token:

• Check the token on honeypot detection tools (honeypot.is, TokenSniffer).
• Look for sell transactions in the token's history on a block explorer.
• If a token has only buys and no sells — it's almost certainly a honeypot.

5. Use Hardware Wallets

For significant amounts, connect your hardware wallet (Ledger, Trezor) to the DEX interface. This way, even if a malicious smart contract tries to drain your funds, you must physically approve every transaction on your device.

Safety Checklist

• ✅ Verify token contract address from official sources
• ✅ Set appropriate slippage tolerance
• ✅ Use a hardware wallet for large trades
• ✅ Regularly revoke unused token approvals
• ✅ Check for honeypot contracts before buying new tokens
• ✅ Start with small test transactions