Crypto hacks and exploits
Optimism Crypto Hacks and Incidents
Incidents affecting assets or contracts on Optimism. Compare dates, amounts, affected services and attack mechanisms; detailed case studies provide timelines and sources.
| Date | Project | Amount, USD | Chains | Affected service | Mechanism |
|---|---|---|---|---|---|
| Balancer V2 Detailed case study Source ↗ | $128.0M | Ethereum, Arbitrum, Base, Polygon, Sonic, Optimism | DeFi protocol | Token and share accounting | |
| Phemex | $85.0M | Ethereum, Solana, XRP, Bitcoin, BNB Smart Chain, Sui, Base, Tron, Arbitrum, Avalanche, Polygon, Optimism, zkSync Era | Centralized exchange | Key compromise | |
| BtcTurk | $48.0M | Ethereum, Avalanche, Arbitrum, Base, Optimism, Mantle, Polygon | Centralized exchange | Key compromise | |
| KyberSwap Elastic | $48.0M | Ethereum, Base, Polygon, Optimism, Arbitrum | DeFi protocol | Token and share accounting | |
| Indodax | $25.2M | Ethereum, Polygon, Optimism | Centralized exchange | Frontend and infrastructure | |
| Sonne Finance | $20.0M | Optimism | DeFi protocol | Token and share accounting | |
| Wintermute | $17.6M | Optimism | DeFi protocol | Access control flaw | |
| Exactly | $7.6M | Optimism | DeFi protocol | Access control flaw | |
| Hundred Finance | $7.4M | Optimism | DeFi protocol | Token and share accounting | |
| Gamdom | $4.2M | Ethereum, BNB Smart Chain, Polygon, Arbitrum, Optimism, Solana, TRON, Bitcoin | Gambling platform | Frontend and infrastructure | |
| Kokomo Finance | $4.0M | Optimism | DeFi protocol | Team fund withdrawal | |
| dForce Lending | $3.7M | Arbitrum, Optimism | DeFi protocol | Reentrancy | |
| SushiSwap | $3.3M | Ethereum, Arbitrum, Optimism, BNB Smart Chain | DeFi protocol | Input validation | |
| Pike V1 | $1.6M | Ethereum, Optimism, Arbitrum | DeFi protocol | Access control flaw | |
| Moonwell Lending | $1.0M | Base, Optimism | DeFi protocol | Oracle manipulation | |
| MOBOX | $750K | Optimism | DeFi protocol | Protocol logic flaw | |
| Aerodrome V1 | $700K | Ethereum, Optimism | DeFi protocol | Frontend and infrastructure | |
| SquidMulticall | $517K | Arbitrum, BNB Chain, Avalanche, Optimism, Base | DeFi protocol | Access control flaw | |
| Arcadia V1 | $455K | Ethereum, Optimism | DeFi protocol | Access control flaw | |
| Clipper | $450K | Optimism, Base | DeFi protocol | Protocol logic flaw | |
| Cozy V2 | $427K | Optimism | DeFi protocol | Input validation | |
| MoonHacker | $300K | Optimism | DeFi protocol | Access control flaw | |
| Velodrome | $250K | Optimism | DeFi protocol | Frontend and infrastructure | |
| Layer2DAO | $190K | Optimism | DeFi protocol | Social engineering | |
| Nebula Revelation | $180K | Optimism | DeFi protocol | Reentrancy | |
| Cozy V2 | $163K | Optimism | DeFi protocol | Protocol logic flaw | |
| Magpie Protocol | $129K | Ethereum, Polygon, BNB Smart Chain, Blast, Avalanche, Arbitrum, Optimism, Base, zkSync Era, Polygon zkEVM | DeFi protocol | Input validation | |
| Quixotic | $100K | Optimism | NFT finance service | Input validation | |
| Equalizer Exchange | $50K | Ethereum, BNB Smart Chain, Polygon, Optimism | DeFi protocol | Protocol logic flaw | |
| Polynomial | $7K | Optimism | DeFi protocol | Input validation | |
| Zapper | No estimate | Ethereum, Arbitrum, Optimism, Polygon, Base | DeFi protocol | Frontend and infrastructure |