Jul 1, 2026
0 new drains, 1 update.
Updated
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Critical✓Contained
Polymarket front-end compromised through third-party vendor; about $3M of users' pUSD drained
Polymarket disclosed on 25 June 2026 that a breached third-party vendor let attackers inject malicious code into its website for some users. Users who interacted with the compromised front-end had their pUSD (Polymarket's USDC-backed stablecoin) drained; Bubblemaps estimated about $3M taken from fewer than 15 users, and the funds were converted to ETH. Polymarket removed the code and says it will fully refund affected users.
Polymarket web app users·Polygon, Ethereum·$3.0M stolen·Since Jun 25, 2026·