| # | Project | Date | Amount Lost | Chain | Technique | Links |
|---|---|---|---|---|---|---|
| 3511 | BlackWallet | $400K | — | Access Control | ||
| 3512 | EtherDelta | $1.4M | ethereum | Access Control / DNS Hijack | ||
| 3513 | ABTC | — | ethereum | Honeypot | ||
| 3514 | Youbit | $10.0M | bitcoin | Hot Wallet Key Compromised | ||
| 3515 | NiceHash | $64.0M | bitcoin | Key Leaked via Infrastructure | ||
| 3516 | Tether | $31.0M | bitcoin | Private Key Compromised | ||
| 3517 | Eth Contingency | $25.0M | — | Rugpull | ||
| 3518 | Parity Multisig | $150M | ethereum | Contract not initialized / Uninitialized Proxy / Other | ||
| 3519 | OKEx | $3.0M | — | Other | ||
| 3520 | Coinis | $1.9M | — | Access Control | ||
| 3521 | Control Finance | $147M | — | Rugpull | ||
| 3522 | Enigma | $500K | — | Other | ||
| 3523 | BTC-e | $181M | — | Rugpull | ||
| 3524 | Parity | $30.0M | ethereum | Unprotected wallet initialization | ||
| 3525 | CoinDash | $7.7M | ethereum | Frontend Attack / Frontend Compromise / Other | ||
| 3526 | Bithumb | $1.0M | — | Access Control | ||
| 3527 | Yapizon | $5.0M | bitcoin | Hot Wallet Key Compromised | ||
| 3528 | Bitcurex | $1.5M | bitcoin | Hot Wallet Key Compromised | ||
| 3529 | Trade Coin Club | $295M | — | Other | ||
| 3530 | Bitfinex | $72.0M | bitcoin | Access Control / Hot Wallet Key Compromised | ||
| 3531 | The DAO | $60.0M | ethereum | Reentrancy / Other | ||
| 3532 | Gatecoin | $2.1M | ethereum | Access Control / Improper Access Control | ||
| 3533 | Rubixi | $7K | — | Access Control | ||
| 3534 | Shapeshift | $230K | bitcoin | Access Control / Private Key Compromised | ||
| 3535 | OneCoin | $4.0M | — | Rugpull | ||
| 3536 | Purse | $2.5M | — | Access Control | ||
| 3537 | BTER | $1.6M | bitcoin | Private Key Compromised | ||
| 3538 | BitFinex | $332K | bitcoin | Access Control / Hot Wallet Key Compromised | ||
| 3539 | Kipcoin | $728K | bitcoin | Access Control / Private Key Compromised | ||
| 3540 | BTER | $1.8M | bitcoin | Access Control / Private Key Compromised |
Data sourced from DefiLlama & SunWeb3Sec/DeFiHackLabs . Thank you for keeping Web3 security data open.
Explore by Attack Type
Access Control Attacks
$15.4B lost
Last: Oct 2026
Arithmetic Overflow & Underflow Attacks
$425.9M lost
Last: Aug 2026
Delegatecall & Call Injection Attacks
$151.7M lost
Last: Sep 2026
Flash Loan Attacks
$1.4B lost
Last: Sep 2026
Oracle Manipulation & Price Manipulation
$1.3B lost
Last: Sep 2026
Reentrancy
$566.0M lost
Last: Sep 2026
DAO Governance Attacks
$204.6M lost
Last: Dec 2025
Frontrunning & Sandwich Attacks
$12.4M lost
Last: Dec 2025
Phishing Attacks
$4.4B lost
Last: Sep 2026
DOS Attacks
Replay Attacks
$340K lost
Last: Jul 2023
Self-Destruct Attacks
$150.0M lost
Last: Nov 2017
Sensitive On-Chain Data
Weak Randomness Attacks
Unchecked Return Value Attacks
$250K lost
Last: Feb 2026
Timestamp Manipulation Attacks
Cross-Chain Bridge Attacks
$2.5B lost
Last: Aug 2026
Proxy Initialization Attacks
$371K lost
Last: Aug 2026
Signature Verification Attacks
$330.3M lost
Last: Aug 2026
Understanding Smart Contract Vulnerabilities
Explore the technical causes behind reentrancy, flash loan attacks, and oracle manipulation in our attack guides.
Learn how these hacks actually worked
Study the exploit patterns behind the incidents in this database, then practice finding them before attackers do.
Stay ahead of major hacks
Get notified about new Web3 hacks with reported losses over $1M.
Unsubscribe anytime.
Start your free security training
Get 25 free lessons and 4 guided exploit exercises.
Onboarding details by email within 2–3 business days.