What Are Web3 Drainers and How They Steal Your Tokens
A drainer is a malicious smart contract that steals your tokens or NFTs the moment you sign a transaction. This isn’t a phishing site asking for your seed phrase — it looks “legit.” You just click “Sign” or “Approve”, like always.
But behind that signature might be:
— Approve unlimited — gives full access to your tokens
— Permit — hidden token transfer without visible confirmation
— Mint NFT — fakes a mint, drains your balance
— Sign to verify wallet — masks a malicious call
One click = full wallet access. And there’s no undo.
Never do this:
• Sign a transaction you don’t fully understand
• Trust a site that’s not in the project’s whitepaper, Twitter, or Discord
• Skip the “Review transaction” step — always verify it’s a swap/send
Protection tools:
• Revoke.cash — cancel old approvals
• Wallet Guard + drainer protection extensions
• Hardware wallets (Ledger, Trezor)
• Use a “farming-only” wallet — don’t store everything in one place
Your signature isn’t just a click — it’s a key to your crypto.
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#Web3Security #CryptoDrainer #WalletProtection #RevokeCash #DeFiRisk