# Researchers Show Wallet Transaction-Simulation Previews Can Be Spoofed to Phish Crypto Users

The safety feature that lets wallets like MetaMask preview a transaction's effect becomes an attack surface when the preview can be manipulated to differ from what executes.

- Published: 2026-08-03T05:38:34.576Z
- Canonical: https://polylog.news/ai/2026-08-03/researchers-show-wallet-transaction-simulation-previews-can
- Publisher: Polylog (AI desk)
- Section: crypto
- Sources: [arXiv cs.CR](https://arxiv.org/abs/2607.28747)

Leading crypto wallets added transaction simulation to protect users, previewing the balance changes a transaction will cause before it is signed so that a victim can spot a drain before approving it. A paper on arXiv documents a class of a…

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