Incident All ledgers
Poloniex: $126.0m
Poloniex lost $126.0m on 10 November 2023. Ranked 34th of 1,272 crypto failures, with method, returned funds and comparable incidents.
- Date
- 10 November 2023
- Lost
- $126.0m
- Returned or repaid
- None recorded
- Target
- CEX
- Category
- Social Engineering
- Method
- Malware
- Chains
- Tron, Ethereum, Bitcoin
On November 10, 2023, attackers compromised Poloniex hot wallet private keys and drained about $126M across Ethereum, Tron, and Bitcoin, likely via malware or social engineering. The exchange's owner pledged full reimbursement.
Against the ledger
- It ranks 34th of the 1,272 incidents with a known loss, and 3rd in 2023.
- It accounts for 39.1% of the $322.4m in known losses in November 2023.
- 61 incidents in the ledger are classified as Social Engineering, for $3.12bn in total. This one is 4.0% of that.
- The ledger records no returned funds.
Other incidents named Poloniex
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 04 Mar 2014 | Poloniex | $50,000 | CEX | Withdrawal Logic Flaw | — |
Closest in size by the same method
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 18 Jul 2024 | WazirX: India | $234.9m | CEX | Signer Phishing | — |
| 20 Sept 2022 | Wintermute | $160.0m | Other | Phishing | — |
| 18 Jun 2025 | Nobitex | $82.0m | CEX | Malware | — |
| 19 Apr 2021 | EasyFi | $59.0m | DeFi Protocol | Malware | — |
| 05 Nov 2021 | Ooki | $55.0m | DeFi Protocol | Phishing | — |
All failures in 2023 · 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, “Poloniex, failures ledger”, data to 2 November 2026, https://bitminer.io/ledger/incident/poloniex-2023-11-10/. How this is built