Most Expensive Crypto Hacks Leaderboard

The biggest Web3 and DeFi exploits ranked by amount lost. Track high-impact incidents, study attack patterns, and learn how security failures scale into multi-million dollar losses.

  • $91B+

    Total Value Lost

  • 3595

    Incidents Tracked

  • 141

    Chains Affected

  • 65

    $100M+ Incidents

Top 10 Biggest Hacks

Jump to full leaderboard
  1. 🥈

    Mantra

    $5.50B

  2. #4

    LuBian

    $3.50B

    bitcoin

  3. #7

    Thodex

    $2.00B

  4. #9

    Finiko

    $1.50B

  5. #10

    Bybit

    $1.40B

    ethereum

Where the Largest Losses Concentrate

Top Chains by Losses

  • ethereum $9,830M
  • bitcoin $5,404M
  • bsc $3,037M
  • solana $1,697M
  • polygon $1,539M

Top Techniques by Losses

  • Other $52,517M
  • Rugpull $15,631M
  • Private Key Compromised (Brute Force) / Weak Key Generation $3,500M
  • Safe Multisig wallet Phishing Exploit / Access Control / Signer Phishing $1,635M
  • Access Control / Hot Wallet Key Compromised $1,027M

Full Leaderboard

Showing 501-550 of 3595 ranked incidents

Largest Web3 incidents by USD amount lost
Rank Project Amount Lost Date Chain Technique Attack Guide Source
501 BTC.com $3.0M bitcoin, ethereum Other / Key Leaked via Infrastructure — View →
502 Skyward Finance $3.0M near Reentrancy / Other / Missing Input Validation Reentrancy View →
503 Fortress Loans $3.0M bsc Governance and Oracle Exploit / Other / Malicious Proposal Oracle Manipulation & Price Manipulation View →
504 Rich Dwarves Tribe $3.0M - Abandoned — View →
505 Tinyman $3.0M algorand Other / Incorrect Share Accounting — View →
506 PolkaTrain $3.0M polkadot Other / Reward Logic Flaw — View →
507 OKEx $3.0M - Other — View →
508 SushiSwap $3.0M ethereum Other / Redirected Deposits / Frontend Compromise — View →
509 Stars Arena $3.0M avalanche Reentrancy Reentrancy View →
510 Zunami Protocol - Case File $3.0M - - — View →
511 IOTA wallet $2.9M - Other — View →
512 Wallstreetswap Finance $2.9M binance Rugpull — View →
513 SUNRAY·FINANCE $2.9M arbitrum Private Key Compromised / Access Control Access Control Attacks View →
514 TAC Protocol $2.9M tac, ton Proof Verifier Bug — —
515 MetaDAO $2.8M - Honeypot — View →
516 Solv Protocol $2.7M ethereum Other / Mint Reserves Logic Exploit / Infinite Mint — View →
517 Multichain $2.7M ethereum Other / Missing Input Validation — View →
518 RetoSwap $2.7M monero Other / Missing Input Validation / Malicious Proposal — View →
519 Ribbon $2.7M ethereum Private Key Compromised / Improper Access Control Access Control Attacks View →
520 Hector Network $2.7M ethereum Improper Access Control Access Control Attacks —
521 OKX DEX $2.7M ethereum Private Key Compromised (Unknown Method) / Private Key Compromised / Access Control Access Control Attacks View →
522 Remitano $2.7M bitcoincash, ethereum, tron Private Key Compromised (Unknown Method) / Key Leaked via Infrastructure Access Control Attacks View →
523 IDO rug pulls $2.7M - Rugpull — View →
524 Fantasm Finance $2.6M fantom Missing Condition Check / Other / Missing Input Validation — View →
525 BNB42 $2.6M - Rugpull — View →
526 PYE $2.6M - Other — View →
527 Fetch.ai $2.6M multiple Private Key Compromised / Access Control Access Control Attacks View →
528 Nemo Yield Trading $2.6M sui Exposed flash-loan function and unauthorized state changes Access Control Attacks View →
529 FCS $2.6M - Rugpull — View →
530 Boy X Highspeed $2.6M - Other — View →
531 Purse $2.5M - Access Control Access Control Attacks View →
532 Hyperbridge $2.5M arbitrum, base, bsc, ethereum Fake State Proof / Other / Forged Proof — View →
533 Atlantis Loans $2.5M bsc Governance takeover and approval drain Access Control Attacks View →
534 Zapper $2.5M - Other Delegatecall & Call Injection Attacks View →
535 EtherCrash $2.5M ethereum Hot Wallet Key Compromised — —
536 Emerald Mine $2.5M eos Rugpull — View →
537 Phishing $2.5M - Phishing Phishing Attacks View →
538 Aquifer $2.5M solana Other — View →
539 Wallet Drain $2.4M - Phishing Phishing Attacks View →
540 SecondFi $2.4M cardano Weak Key Generation — View →
541 Tessera DAO $2.4M bsc Access Control / Improper Access Control / Infinite Mint Access Control Attacks View →
542 CoinSpot $2.4M ethereum Private Key Compromised (Unknown Method) / Hot Wallet Key Compromised Access Control Attacks View →
543 PancakeBunny $2.4M bsc Inflated vault-profit accounting Flash Loan Attacks View →
544 TempleDAO $2.4M ethereum Exploit Lack of Input Authentication / Other / Improper Access Control Access Control Attacks View →
545 BitPay $2.4M - Access Control Access Control Attacks View →
546 Trinity Wallet $2.4M iota Cloudflare Key Compromised / CDN Compromise — View →
547 Evolved Apes $2.3M - Rugpull — View →
548 Turtledex $2.3M binance, bsc Rugpull / Drained Contracts / Liquidity Rug — View →
549 friesDAO $2.3M ethereum Access Control / Weak Key Generation Access Control Attacks View →
550 Fairmoon $2.3M - Rugpull — View →

Data sourced from DefiLlama & SunWeb3Sec/DeFiHackLabs . Thank you for keeping Web3 security data open.

Understanding the Pattern Behind Billion-Dollar Losses

The most expensive crypto hacks are not random. They cluster around repeating vulnerability patterns: access-control failures, flash-loan manipulation, oracle abuse, and unsafe external calls. Studying large-loss incidents helps security researchers prioritize high-impact threat models first.

For deeper context, explore the full Web3 Hacks Dashboard and our Smart Contract Attack Library for hands-on exploit and mitigation breakdowns.

Frequently Asked Questions

How is this leaderboard ranked?

Incidents are ranked by parsed USD amount lost in descending order. Records without parseable loss values are excluded from this ranking.

Does this include every attack type?

It includes all incidents with known loss values in the database. Use the full dashboard for broader filtering and lower-severity incidents.

How can I learn to prevent these exploits?

Study attack-class pages first, then practice in guided exercises inside the Smart Contract Hacking course.

Learn to Prevent High-Impact Smart Contract Hacks

$91B+ lost to preventable vulnerabilities. Master real exploit patterns and defense techniques with hands-on Web3 security training.