Onchain Lens says $5.55m tied to Mercado Bitcoin hack is frozen

The story so far: Mercado Bitcoin security incident

Brazilian exchange Mercado Bitcoin confirmed a security incident and paused deposits and withdrawals, saying customer assets were unaffected. Mercado Bitcoin says it will bear the $40m loss itself, with no customer losses expected. Onchain Lens says about $5.55m tied to the hack is frozen across three addresses.

1. 2 Nov 202613:49 UTC

   Mercado Bitcoin confirms security incident and pauses deposits and withdrawals

   Brazilian crypto exchange Mercado Bitcoin confirmed a security incident and temporarily suspended deposits and withdrawals, saying customer assets were unaffected. Hypernative had flagged suspicious transfers of more than $40m across several blockchains, which local media linked to the incident.

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2. 2 Nov 202615:10 UTC

   Tether freezes over 4.5m USDT linked to Mercado Bitcoin security incident

   Tether CEO Paolo Ardoino says Tether has frozen more than 4.5m USDT tied to a security incident at Mercado Bitcoin. The exchange said no customers lost funds and no data leaked, and paused deposits and withdrawals as a precaution.

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3. 2 Nov 202615:47 UTC

   Mercado Bitcoin publishes addresses tied to security incident

   Brazilian exchange Mercado Bitcoin published destination addresses linked to the incident across the EVM, BTC, SOL, XLM and TRON networks, saying they are for identification and tracking only. It has not disclosed the scale of assets involved or a timeline for restoring services.

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4. 2 Nov 202616:45 UTC

   Mercado Bitcoin says customer funds unaffected after alleged hack

   Onchain Lens says a hacker holds $46.5m in crypto across 46 addresses after an alleged attack on Mercado Bitcoin, including 3,680 ETH, 106 BTC and $8m in stablecoins. Mercado Bitcoin says customer funds and data were not affected.

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5. 2 Nov 202616:57 UTC

   Mercado Bitcoin says it will bear $40m loss from hack

   Brazilian exchange Mercado Bitcoin says it will itself bear the $40m loss caused by a hack and that customers are not expected to lose funds. Onchain Lens says an Arkham-tagged Mercado Bitcoin hacker entity holds about $46.5m in crypto across 46 addresses.

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6. 2 Nov 202619:23 UTC

   Mercado Bitcoin says over $46m moved from its wallets in security incident

   Brazil's Mercado Bitcoin said a security incident led to more than $46m in crypto being moved from its wallets, and funds kept moving from linked addresses after it paused deposits and withdrawals. Tether and Circle had frozen about $6.2m of the funds by 16:42 UTC; a spokesperson said customers suffered no losses and no data leaked.

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7. 2 Nov 202619:42 UTC

   Onchain Lens says $5.55m tied to Mercado Bitcoin hack is frozen

   Onchain Lens says about $5.55m linked to the hack of Brazilian exchange Mercado Bitcoin has been frozen across three addresses, including USDT, USDC and gold-backed tokens.

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