MetaMask Rolls Out New Wallet Protections Against Crypto Scams

The preview-mismatch block targets a specific attack pattern that has quietly drained wallets for years, so this is less a feature launch than an admission that users cannot reliably verify what they sign. It matters most for the long tail of retail users who treat the wallet as their primary custody tool, and it raises the bar for rival wallets that have leaned on warnings rather than enforcement. The open question is whether blocking divergent transactions pushes scams toward channels the wallet cannot inspect, such as off-chain approvals and social engineering.