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Polymarket users drained after third-party provider breach; trading paused

Polymarket said a third-party provider was breached and users' accounts were drained. Trading has resumed, and the company says affected users will be made whole. Check your account activity yourself in the official app.

October 30, 2026 · 1 min read

Affected: Polymarket, Ledger

What happened

Polymarket paused trading on Thursday after users reported funds leaving their accounts. The company said one of its third-party providers was compromised. Estimates of the losses range from about $1.4 million to $3.46 million, and several outlets cite roughly $2.6 to $2.7 million across nearly 1,000 accounts. Trading was later restored, and Polymarket says impacted users will be refunded. Headlines also mention a separate Ledger breach, but the sources give conflicting or unclear details, so we can't confirm a link between the two.

Who is affected

Polymarket users whose accounts were drained, reportedly nearly 1,000 accounts. Other Polymarket users may want to check their accounts as a precaution. Whether Ledger users are affected is unclear from the sources.

What to do now

  • Open the Polymarket app or site yourself, without using any link in a message, and review your balance and recent activity.
  • Contact Polymarket through its official support channels if you see transactions you didn't make.
  • Change your Polymarket password and turn on an authenticator app or passkey where available.
  • Review and revoke any token approvals you don't recognize or no longer use.
  • Be wary of emails, DMs, or posts claiming to offer refunds or asking you to verify your wallet. Scammers often exploit incidents like this.
  • Never share your seed phrase or approve unexpected wallet requests.

Our alerts never ask you to click a link, log in, "verify" a wallet or move funds. Expect scammers to copy this news: if a message about it asks for any of that, it's a scam.

Sources

Written by AI Security Watch from the sources above and published automatically. Education only, not financial advice.