{
  "version": "https://jsonfeed.org/version/1.1",
  "title": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets · updates",
  "home_page_url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026",
  "feed_url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026/feed.json",
  "description": "Brazilian crypto exchange Mercado Bitcoin says it identified a security incident in the early hours of Nov 2 2026 that hit only its online hot wallets, not its offline cold wallets. It notified the authorities, suspended deposits and withdrawals and then took the platform temporarily offline, and says no customer data leaked and customers will not lose assets. In its Nov 2 evening update it said about US$11M had been blocked with help from Tether, Circle, BRL1, Paxos and Chainalysis, and about US$38M was still not blocked. Chainalysis, which helped trace and freeze funds, estimates about $49M was stolen across 17 blockchains, mostly Bitcoin and Ethereum. Crypto Times reports that Mercado Bitcoin later put the affected assets at about $36.3M with $12.9M blocked, and that it is preparing a gradual reopening with no confirmed date. The exchange has not said how the attacker got in.",
  "language": "en",
  "_pwn": {
    "slug": "mercado-bitcoin-hot-wallet-hack-nov-2026",
    "severity": "high",
    "status": "live",
    "patchStatus": "partial",
    "rss": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026/feed.xml",
    "llms": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026/llms.txt",
    "json": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026.json"
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  "items": [
    {
      "id": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-04-605565bc",
      "url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-04-605565bc",
      "title": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Crypto Times reports that Mercado Bitcoin now puts the affected assets at about $36.3M with $12.9M blocked, and is preparing to restore platform access gradually as each function passes security checks, with no confirmed date.",
      "content_text": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Crypto Times reports that Mercado Bitcoin now puts the affected assets at about $36.3M with $12.9M blocked, and is preparing to restore platform access gradually as each function passes security checks, with no confirmed date.\n\nSource: https://www.cryptotimes.io/2026/11/04/mercado-bitcoin-plans-gradual-platform-reopening-after-36-3m-incident/",
      "date_published": "2026-11-04T00:00:00.000Z",
      "external_url": "https://www.cryptotimes.io/2026/11/04/mercado-bitcoin-plans-gradual-platform-reopening-after-36-3m-incident/",
      "tags": [
        "high"
      ]
    },
    {
      "id": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-04-a93f7d10",
      "url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-04-a93f7d10",
      "title": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Arkham reports that wallets linked to the attacker moved about $13.26M to 23 outside addresses and swapped stolen tokens for about $10.55M of ETH (4,605 ETH over 338 swaps), while a $650K bridge to Bitcoin through Bridgers appears to have been halted.",
      "content_text": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Arkham reports that wallets linked to the attacker moved about $13.26M to 23 outside addresses and swapped stolen tokens for about $10.55M of ETH (4,605 ETH over 338 swaps), while a $650K bridge to Bitcoin through Bridgers appears to have been halted.\n\nSource: https://thedefiant.io/news/hacks/mercado-bitcoin-attacker-swaps-tokens-for-10-55-million-in-eth-arkham-says",
      "date_published": "2026-11-04T00:00:00.000Z",
      "external_url": "https://thedefiant.io/news/hacks/mercado-bitcoin-attacker-swaps-tokens-for-10-55-million-in-eth-arkham-says",
      "tags": [
        "high"
      ]
    },
    {
      "id": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-02-4b0cae19",
      "url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-02-4b0cae19",
      "title": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Mercado Bitcoin says it quickly identified and contained a security incident in one of its systems overnight, that customers suffered no losses and no data leaked, and that deposits and withdrawals are temporarily suspended as a precaution.",
      "content_text": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Mercado Bitcoin says it quickly identified and contained a security incident in one of its systems overnight, that customers suffered no losses and no data leaked, and that deposits and withdrawals are temporarily suspended as a precaution.\n\nSource: https://central.ajuda.mercadobitcoin.com.br/wiki/spaces/TF/pages/2965274628/9+56hs+09+11+2026+-+Atualiza+o",
      "date_published": "2026-11-02T00:00:00.000Z",
      "external_url": "https://central.ajuda.mercadobitcoin.com.br/wiki/spaces/TF/pages/2965274628/9+56hs+09+11+2026+-+Atualiza+o",
      "tags": [
        "high"
      ]
    },
    {
      "id": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-02-db31004d",
      "url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-02-db31004d",
      "title": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Chainalysis says an attacker moved assets across 17 blockchains in waves, draining an estimated $49M, mostly Bitcoin and Ethereum, and that it helped law enforcement and stablecoin issuers freeze nearly $10M, including more than $4M of USDT frozen by Tether.",
      "content_text": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: Chainalysis says an attacker moved assets across 17 blockchains in waves, draining an estimated $49M, mostly Bitcoin and Ethereum, and that it helped law enforcement and stablecoin issuers freeze nearly $10M, including more than $4M of USDT frozen by Tether.\n\nSource: https://www.chainalysis.com/blog/chainalysis-response-mercado-bitcoin/",
      "date_published": "2026-11-02T00:00:00.000Z",
      "external_url": "https://www.chainalysis.com/blog/chainalysis-response-mercado-bitcoin/",
      "tags": [
        "high"
      ]
    },
    {
      "id": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-02-52e77777",
      "url": "https://pwn.watch/i/mercado-bitcoin-hot-wallet-hack-nov-2026#2026-11-02-52e77777",
      "title": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: In its evening update Mercado Bitcoin guarantees customers will not lose assets, says only its hot wallets were hit and the platform was taken offline, and puts the amount blocked at about US$11M with about US$38M not yet blocked. It warns it never asks for passwords, codes or recovery phrases and offers no refunds by link, WhatsApp or phone.",
      "content_text": "Mercado Bitcoin hot wallets drained in a hack worth tens of millions; the exchange is offline and says customers will not lose assets: In its evening update Mercado Bitcoin guarantees customers will not lose assets, says only its hot wallets were hit and the platform was taken offline, and puts the amount blocked at about US$11M with about US$38M not yet blocked. It warns it never asks for passwords, codes or recovery phrases and offers no refunds by link, WhatsApp or phone.\n\nSource: https://central.ajuda.mercadobitcoin.com.br/wiki/spaces/TF/pages/2965700610",
      "date_published": "2026-11-02T00:00:00.000Z",
      "external_url": "https://central.ajuda.mercadobitcoin.com.br/wiki/spaces/TF/pages/2965700610",
      "tags": [
        "high"
      ]
    }
  ]
}