Another painful DeFi lesson: Someone used the Aave official interface (integrated with CoW Swap) to swap about 50 million USDT for AAVE. Slippage warnings were flashing like crazy, but the user manually confirmed on their phone and went through with it. The result? They only received 324 AAVE (≈$36,000), with 99.9% of their principal gone in an instant! Aave founder Stani: Not a bug, the user confirmed it themselves; the team will refund about $600,000 in fees and optimize protections. Golden rules for large transactions: • Don’t dump a huge order all at once! Split it into smaller batches. • Set slippage tolerance to 0.1% or even lower. • Test with a small amount first to confirm the output is reasonable. • Be cautious using protocol swaps for tokens with low liquidity.