On Thursday, 29 October 2026, Binance reported a suspected security breach affecting roughly 6.3 billion dollars in crypto assets, paused withdrawals, and said about 3 billion dollars had been frozen with partners. Earlier the same afternoon, prediction-market platform Polymarket halted international trading after a third-party provider compromise drained user wallets, then said it fixed the issue, contacted law enforcement, and would make affected users whole.
Bitcoin fell more than 3 percent in 24 hours to about 77,300 dollars on Friday morning, briefly toward 76,000 dollars, with 1.5 billion dollars in leveraged liquidations, according to CoinDesk reporting on 30 October.
Why the story travels is the dollar figure alone, more than four times the previous 1.5 billion dollar Bybit record in 2025, plus two famous platforms hit within hours, on the eve of a United States election where Polymarket odds are quoted daily. Viewers instantly ask whether their money is safe.
What is confirmed is Binance’s own roughly 6.3 billion dollar impacted and roughly 3 billion dollar frozen figures, the withdrawal pause, Polymarket’s international halt and made-whole pledge, and the Bitcoin slide and liquidations as reported.
What is not confirmed is the attacker identity. TRM Labs attributed the attack to North Korea’s TraderTraitor group with high confidence, but Binance has not confirmed that attribution. Polymarket’s loss of 2.6 to 2.73 million dollars across about 700 accounts is a third-party Bubblemaps and Bitquery estimate, not a company figure. No evidence of a link between the two incidents has been published, and frozen assets do not equal recovered or returned money. The final net loss is not yet known, and Binance’s compromised DevOps engineer laptop explanation is preliminary, not a completed forensic finding.
Polymarket is a United States-founded prediction market heavily used for United States election betting, which makes the timing, days before the 3 November midterms, especially sensitive. The two incidents together raise questions about security at the largest crypto platforms, even as companies say they are working with partners and law enforcement to freeze and recover funds.
Sources: CoinDesk, 30 Oct 2026; The National News, 30 Oct 2026; CryptoCompass summary.
