Incident All ledgers
SwissBorg: $41.5m
SwissBorg lost $41.5m on 9 September 2025. Ranked 82nd of 1,272 crypto failures, with method, returned funds and comparable incidents.
- Date
- 9 September 2025
- Lost
- $41.5m
- Returned or repaid
- None recorded
- Target
- CEX
- Category
- Frontend & Infrastructure
- Method
- API Key Compromised
- Chains
- Solana
SwissBorg's SOL Earn program lost about 192,600 SOL (~$41.5M) after an attacker compromised API credentials of staking partner Kiln and slipped authority-transfer instructions into unstaking transactions, handing withdrawal control to attacker addresses.
Against the ledger
- It ranks 82nd of the 1,272 incidents with a known loss, and 12th in 2025.
- It accounts for 37.3% of the $111.2m in known losses in September 2025.
- 93 incidents in the ledger are classified as Frontend & Infrastructure, for $7.49bn in total. This one is 0.6% of that.
- The ledger records no returned funds.
Closest in size by the same method
| Date | Target | Lost | Type | Method | Returned |
|---|---|---|---|---|---|
| 12 Feb 2022 | IRA Financial / Gemini | $36.0m | CEX | API Key Compromised | — |
| 18 Jan 2022 | Crypto-com | $33.7m | CEX | Session Key Compromised | — |
| 21 Jun 2018 | Bithumb | $31.0m | CEX | Key Leaked via Infrastructure | — |
| 12 Jul 2019 | BitPoint | $27.6m | CEX | Key Leaked via Infrastructure | — |
| 16 Jul 2025 | BigONE | $27.0m | CEX | Supply Chain Attack | — |
All failures in 2025 · 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, “SwissBorg, failures ledger”, data to 2 November 2026, https://bitminer.io/ledger/incident/swissborg-2025-09-09/. How this is built