Incident All ledgers
ValueDefi: $11.0m
ValueDefi lost $11.0m on 7 May 2021. Ranked 186th of 1,272 crypto failures, with method, returned funds and comparable incidents.
- Date
- 7 May 2021
- Lost
- $11.0m
- Returned or repaid
- None recorded
- Target
- DeFi Protocol
- Category
- Token & Share Accounting
- Method
- Arithmetic Error
- Chains
- BSC
On May 7, 2021, an attacker drained about $11 million from ValueDefi's custom-weighted pools by re-initializing contracts that had never been flagged as initialized, making themselves operator/owner and withdrawing vBWAP/BUSD LP tokens.
Against the ledger
- It ranks 186th of the 1,272 incidents with a known loss, and 36th in 2021.
- It accounts for 3.8% of the $287.1m in known losses in May 2021.
- 160 incidents in the ledger are classified as Token & Share Accounting, for $1.45bn in total. This one is 0.8% of that.
- The ledger records no returned funds.
Other incidents named ValueDefi
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 05 May 2021 | ValueDefi | $10.0m | DeFi Protocol | Improper Access Control | — |
| 14 Nov 2020 | ValueDefi | $7.4m | DeFi Protocol | Spot Price Manipulation | — |
Closest in size by the same method
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 27 Jan 2024 | Somesing | $11.6m | DeFi Protocol | Unbacked Mint | — |
| 22 Aug 2026 | KiiChain | $9.7m | Chain | Arithmetic Error | — |
| 25 Jun 2025 | Resupply | $9.6m | DeFi Protocol | Donation Attack | — |
| 11 Feb 2025 | zkLend | $9.6m | DeFi Protocol | First Depositor Attack | — |
| 29 Dec 2020 | Cover Protocol | $9.4m | DeFi Protocol | Arithmetic Error | — |
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, “ValueDefi, failures ledger”, data to 2 November 2026, https://bitminer.io/ledger/incident/valuedefi-2021-05-07/. How this is built