Web3 Hacks & DeFi Exploit Intelligence
- $104B+Lost
- 3836Incidents
- 124Chains
- 16Classes
| # | Project | Date | Amount Lost | Chain | Technique | Links |
|---|---|---|---|---|---|---|
| 3631 | opyn Withdrawal Logic Flaw | $371K | ethereum | Withdrawal Logic Flaw | ||
| 3632 | 2gether Rugpull / Key Leaked via Infrastructure | $1.4M | bitcoin, ethereum | Rugpull / Key Leaked via Infrastructure | ||
| 3633 | Twitter Access Control Attacks | $120K | — | Access Control | ||
| 3634 | Cashaa Access Control Attacks | $3.1M | bitcoin | Access Control / Key Leaked via Infrastructure | ||
| 3635 | Vether Access Control Attacks | $450K | ethereum | Improper Access Control | ||
| 3636 | Balancer Flash Loan Attacks | $524K | ethereum | Flash Loan Attack / Incorrect Share Accounting | ||
| 3637 | Bancor Access Control Attacks | $545K | ethereum | Improper Access Control | ||
| 3638 | WoToken Rugpull | $1.0B | — | Rugpull | ||
| 3639 | Hegic Deposit Logic Flaw | $29K | ethereum | Deposit Logic Flaw | ||
| 3640 | Hegic Other | $48K | — | Other | ||
| 3641 | Lendf.me Reentrancy | $25.2M | ethereum | Reentrancy / Other | ||
| 3642 | dForce Lending Reentrancy | $25.0M | ethereum | Reentrancy | ||
| 3643 | Uniswap V1 Reentrancy | $220K | ethereum | Reentrancy | ||
| 3644 | Uniswap Other | $1.4M | — | Other | ||
| 3645 | Bisq Withdrawal Logic Flaw | $250K | bitcoin | Withdrawal Logic Flaw | ||
| 3646 | Ledger Access Control Attacks | $224K | — | Access Control | ||
| 3647 | Iron Finance Other | $170K | — | Other | ||
| 3648 | MakerDAO Oracle Manipulation & Price Manipulation | $8.3M | ethereum | Stale Oracle Price | ||
| 3649 | bZx Flash Loan Attacks | $666K | ethereum | Flash Loan Attack | ||
| 3650 | Ooki Flash Loan Attacks | $650K | ethereum | Flashloan Price Oracle Attack / Spot Price Manipulation | ||
| 3651 | Ooki Flash Loan Attacks | $350K | ethereum | Flashloan Slippage Attack / Spot Price Manipulation | ||
| 3652 | bZx Flash Loan Attacks | $356K | ethereum | Flash Loan Attack | ||
| 3653 | IOTA wallet Other | $2.9M | — | Other | ||
| 3654 | Trinity Wallet Cloudflare Key Compromised / CDN Compromise | $2.4M | iota | Cloudflare Key Compromised / CDN Compromise | ||
| 3655 | Leo Finance Other | $42K | — | Other | ||
| 3656 | Altsbit Key Leaked via Infrastructure | $303K | bitcoin, ethereum | Key Leaked via Infrastructure | ||
| 3657 | LuckLambo104 Unknown | $2K | tron | Unknown | ||
| 3658 | Bitcoin Gold Validator Key Compromised | $70K | bitcoin gold | Validator Key Compromised | ||
| 3659 | Electrum Access Control Attacks | $17.7M | — | Access Control | ||
| 3660 | Nuls Signature Verification Flaw | $480K | nuls | Signature Verification Flaw |
Data sourced from DefiLlama & SunWeb3Sec/DeFiHackLabs . Thank you for keeping Web3 security data open.
Hack Radar
Fresh DeFi incidents the moment they land in our database. Verified by trusted sources; auto-ingested entries are flagged for review.
Explore by Attack Type
Access Control Attacks
Arithmetic Overflow & Underflow Attacks
Delegatecall & Call Injection Attacks
Flash Loan Attacks
Oracle Manipulation & Price Manipulation
Reentrancy
DAO Governance Attacks
Frontrunning & Sandwich Attacks
Phishing Attacks
DOS Attacks
Replay Attacks
Self-Destruct Attacks
Sensitive On-Chain Data
Weak Randomness Attacks
Unchecked Return Value Attacks
Timestamp Manipulation Attacks
Understanding Smart Contract Vulnerabilities
Smart contract vulnerabilities remain the leading cause of DeFi protocol losses, with over $10 billion stolen since 2016. Understanding attack vectors like reentrancy, flash loans, and oracle manipulation is essential for every blockchain developer and security researcher.
Each incident in our database is categorized by attack class and linked to our in-depth vulnerability guides, making this the most educational Web3 hacks tracker available. Want a quick ranking? See the most expensive crypto hacks leaderboard.
Learn how these hacks actually worked
Study the exploit patterns behind the incidents in this database, then practice finding them before attackers do.