Brazil's largest crypto exchange, Mercado Bitcoin, suspended deposits and withdrawals on Monday after a security incident in one of its systems, saying no customers lost money and no data leaked. Blockchain security firm Hypernative flagged more than $40 million in suspicious transfers across at least 10 blockchains, a figure the exchange has not confirmed, and the exchange has not disclosed how the attackers got in. Mercado Bitcoin published destination addresses on five networks so the funds can be tracked on-chain. Tether CEO Paolo Ardoino said the issuer froze more than 4.5 million USDT linked to the incident, though a freeze does not by itself return funds to their owner. The incident follows a theft of more than $6 billion from Binance on October 29, which the FBI attributed to North Korea's TraderTraitor group; Mercado Bitcoin has not linked the two and has given no date for resuming services.
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cryptocybersecurityBinancestablecoins
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Related tickers and likely impact
BTC/USDT
• NeutralBitcoin
Relevance: low
| Market | Crypto |
|---|---|
| Exchange | Binance |
| Sector | Layer 1 |
| Market cap | $1.6T |
| Close on 11/01/2026 | 78,354.00 |
| Change that session | +1.00% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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