MetaMask Anti-"Red Pill" Protection: How It Blocks Deceptive Transactions Smart contract scams are getting smarter. A rising vector in Web3 is the "Red Pill" attack - where a malicious contract tricks your wallet during simulation, then drains your assets upon execution. MetaMask extension v13.45 introduces an automated defense active by default for smart accounts across 13 EVM networks. HOW A "RED PILL" ATTACK WORKS Before you sign, your wallet runs a simulation to generate a transaction preview: The Trap: The scam contract detects the simulation environment and displays a safe preview (e.g., "Receive 0.1 ETH"). The Switch: Once signed and sent on-chain, the contract detects live execution, alters its code path, and steals your funds instead. HOW METAMASK PROTECTS YOUR FUNDS MetaMask now performs a real-time verification at execution: 1. Preview vs. Execution: It compares the real-time state change with the initial preview. 2. Auto-Block: If the execution outcome diverges from the preview, the transaction is immediately halted and reverted. 3. Outcome: You only lose the gas fee - your portfolio stays intact. Simulation spoofing was a major loophole. By enforcing what you see is what actually executes, MetaMask eliminates one of the stealthiest smart contract exploits in Web3.