Incident All ledgers
Indexed Finance: $16.0m
Indexed Finance lost $16.0m on 14 October 2021. Ranked 150th of 1,272 crypto failures, with method, returned funds and comparable incidents.
- Date
- 14 October 2021
- Lost
- $16.0m
- Returned or repaid
- None recorded
- Target
- DeFi Protocol
- Category
- Oracle Manipulation
- Method
- Spot Price Manipulation
- Chains
- Ethereum
On October 14, 2021, an attacker used large flashloans to unbalance Indexed Finance's DEFI5 and CC10 pools, buy component assets at steep discounts, and drain about $16M in a single transaction.
Against the ledger
- It ranks 150th of the 1,272 incidents with a known loss, and 32nd in 2021.
- It accounts for 3.6% of the $449.0m in known losses in October 2021.
- 159 incidents in the ledger are classified as Oracle Manipulation, for $894.1m in total. This one is 1.8% of that.
- The ledger records no returned funds.
Other incidents named Indexed
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 21 Mar 2023 | Indexed Finance | $9,925 | DeFi Protocol | Swap Logic Flaw | — |
Closest in size by the same method
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 10 Jun 2024 | UwU Lend | $20.0m | DeFi Protocol | Spot Price Manipulation | — |
| 16 Apr 2026 | Rhea Lend | $18.4m | DeFi Protocol | Spot Price Manipulation | — |
| 02 Apr 2022 | Inverse Finance Frontier | $15.6m | DeFi Protocol | Spot Price Manipulation | — |
| 28 Sept 2020 | Eminence | $15.0m | DeFi Protocol | Spot Price Manipulation | — |
| 28 Apr 2022 | DEUS Finance | $13.4m | DeFi Protocol | Spot Price Manipulation | — |
All failures in 2021 · 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, “Indexed Finance, failures ledger”, data to 2 November 2026, https://bitminer.io/ledger/incident/indexed-finance-2021-10-14/. How this is built