MetaMask adds Polymarket prediction markets to mobile app
MetaMask rolled out a paid security subscription called βTransaction Shieldβ this Tuesday that promises to refund users if its threat detection tools fail. The service costs $9.99 per month and offers up to $10,000 in coverage for transactions the wallet incorrectly flags as βsafe.β
The feature targets the anxiety of signing malicious contractsβa vector that can drain millions from users, as seen in the case of this victim, who lost over $3 million in August 2025. The way the new βTransaction Shieldβ works is simple: if the system gives a transaction the green light but funds are stolen, MetaMask pays.

The coverage is specific. It applies to assets lost during the interaction itselfβsuch as a drainer contract masking as a mint. It does not cover:
Coverage is capped at $10,000 monthly across 100 eligible transactions. Claims must be filed within 21 days, with payouts settled in mUSD within roughly 15 business days.
The service supports major EVM chains including Ethereum, Arbitrum, Polygon, BNB Chain, and Base. It is currently available only on the browser extension, with mobile support pending.
This move signals a pivot for wallet providers from passive tools to active, paid guardians. By monetizing security, MetaMask creates a recurring revenue stream while addressing the primary barrier to entry for retail capital: fear of the βSignβ button.
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