Trust Wallet's DeFi browser gives 60 million users direct access to decentralised exchanges, lending protocols, yield farms, and NFT platforms. That access comes with risks that Trust Wallet's security model cannot fully mitigate -- because the risks live in the smart contracts users interact with, not in the wallet itself. DeFi exploits cost the industry approximately $1.8 billion in 2025. This article documents the most common attack types targeting Trust Wallet users, real-world case studies, and a practical protection framework.
Attack Type 1: Malicious Token Approval Drain
How it works: A malicious DeFi site requests an "unlimited approval" for a widely held token (USDT, USDC, ETH). The user approves thinking they are joining a yield farm or DEX. Hours or days later, the attacker calls the contract function that uses that approval to drain the full token balance from all approving wallets simultaneously.
Scale in 2025: This attack type accounted for an estimated $340 million in losses across all wallets in 2025, making it the single largest DeFi threat category. Trust Wallet users are affected proportionally to their DeFi activity.
Protection: Never grant unlimited approvals. When Trust Wallet shows the approval confirmation, click "Edit" and set the amount to exactly what you need for this specific transaction. Audit your approvals monthly at revoke.cash.
Attack Type 2: Rug Pull
How it works: A new token project launches with a liquidity pool on PancakeSwap or Uniswap. Trust Wallet users buy in via the built-in swap feature or the dApp browser. The developers hold a hidden minting function or a large pre-allocated share of tokens. Once the pool reaches a target value, they drain all liquidity and disappear.
Real case (2025): The "MetaYield" project on BNB Chain attracted $2.8 million in liquidity over 72 hours before the developer wallet drained the pool. 4,200 Trust Wallet users lost an average of $667 each. The contract had not been audited and the developer team used anonymous identities.
Protection: Before buying any new token via Trust Wallet, check: is the contract audited? Is the liquidity locked (verifiable on Unicrypt or TeamFinance)? Is developer wallet identity verifiable? If any answer is no, the risk is very high.
Attack Type 3: Phishing dApp
How it works: A website that looks identical to Uniswap, AAVE, or another major protocol requests wallet connection via Trust Wallet's WalletConnect or dApp browser. When the user approves a transaction, instead of a swap or deposit, it is actually a transferFrom call sending all tokens to the attacker.
Red flags: URL does not exactly match the official domain; site was shared via social media or Discord DM; the transaction preview shows a token transfer rather than a swap or deposit.
Attack Type 4: Fake Airdrop Token
Trust Wallet automatically displays tokens sent to your wallet address. Attackers send worthless tokens with names like "You have 10,000 USDT -- visit [scam URL] to claim." Users who visit the URL and connect their wallet are prompted to sign a transaction that drains their real tokens. Trust Wallet's spam token filter catches many of these, but new variants emerge constantly.
DeFi Risk Assessment by Protocol Type
| Protocol Type | Risk Level | Key Risks | Safer Alternative |
|---|---|---|---|
| Established DEX (Uniswap v3, PancakeSwap) | Low | Slippage, sandwich attacks | Use official app URLs only |
| New yield farm (<30 days old) | Very High | Rug pull, malicious approval | Wait for audit and track record |
| NFT minting (established collections) | Low-Medium | Gas wars, failed transactions | Verify contract on Etherscan first |
| Unknown token swap | High | Honeypot, rug pull | Check TokenSniffer before buying |
| Lending protocol (AAVE, Compound) | Low | Liquidation risk | Monitor collateral ratio actively |
What to Do If Your Trust Wallet Is Drained
Act immediately: move any remaining assets to a new wallet address (create a fresh one in Trust Wallet or another wallet app), revoke all token approvals on the compromised wallet via revoke.cash, and report the malicious contract address to CertiK's Skynet and Trust Wallet's support. Unfortunately, on-chain transactions are irreversible -- funds sent to an attacker cannot be recovered through Trust Wallet or Binance. For cases involving significant losses, professional blockchain forensics may assist with tracking funds. See our smart contract safety guide for prevention best practices.