Blockchain

Never approve unlimited token allowances on DeFi protocols

When a DeFi app asks you to approve spending "unlimited" tokens, you are giving that smart contract permission to drain your entire balance of that token forever. If the contract is later exploited, your funds are gone. Always set a specific approval amount equal to what you intend to swap. Use Revoke.cash to audit and revoke old unlimited approvals. This single habit prevents the most common DeFi exploit vector.