Incident All ledgers
Mercado Bitcoin: $40.0m
Mercado Bitcoin lost $40.0m on 2 November 2026. Ranked 84th of 1,272 crypto failures, with method, returned funds and comparable incidents.
- Date
- 2 November 2026
- Lost
- $40.0m
- Returned or repaid
- None recorded
- Target
- CEX
- Category
- Protocol Logic
- Chains
- Bitcoin, Ethereum, Solana, TRON, Polygon, Arbitrum, Avalanche, BSC
On November 2, 2026, attackers breached a Mercado Bitcoin system and moved over $40 million in crypto from exchange wallets on multiple chains. The exchange paused deposits and withdrawals, Tether froze over $4.5 million USDT, and the exchange said customers would not lose funds.
Against the ledger
- It ranks 84th of the 1,272 incidents with a known loss, and 10th in 2026.
- It accounts for 98.9% of the $40.4m in known losses in November 2026.
- 164 incidents in the ledger are classified as Protocol Logic, for $293.4m in total. This one is 13.6% of that.
- The ledger records no returned funds.
Closest in size by the same method
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 13 Feb 2021 | Alpha Finance | $37.5m | DeFi Protocol | Borrow Logic Flaw | — |
| 30 Nov 2021 | MonoX | $31.4m | DeFi Protocol | Swap Logic Flaw | — |
| 03 Aug 2021 | Popsicle Finance | $20.7m | DeFi Protocol | Reward Logic Flaw | — |
| 17 May 2021 | BearnFi | $18.0m | DeFi Protocol | Withdrawal Logic Flaw | — |
| 25 Mar 2025 | Abracadabra Spell | $13.0m | DeFi Protocol | Liquidation Logic Flaw | — |
On Bitminer.io
All failures in 2026 · The failures ledger
Amounts are DefiLlama’s estimates and can change as incidents are revalued. Its returned figure can include money a company repaid itself, not only funds recovered from attackers. Source: DefiLlama.
Cite this Bitminer.io, “Mercado Bitcoin, failures ledger”, data to 2 November 2026, https://bitminer.io/ledger/incident/mercado-bitcoin-2026-11-02/. How this is built