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.

  • $104B+

    Total Value Lost

  • 3836

    Incidents Tracked

  • 124

    Chains Affected

  • 88

    $100M+ Incidents

Top 10 Biggest Hacks

Jump to full leaderboard
  1. 🥈

    Mantra

    $5.50B

  2. #4

    LuBian

    $3.50B

    bitcoin

  3. #8

    Thodex

    $2.00B

  4. #10

    Finiko

    $1.50B

Where the Largest Losses Concentrate

Top Chains by Losses

  • ethereum $9,731M
  • bitcoin $5,447M
  • bsc $2,997M
  • solana $1,694M
  • polygon $1,539M

Top Techniques by Losses

  • Other $61,131M
  • Rugpull $15,643M
  • Private Key Compromised (Brute Force) / Weak Key Generation $3,500M
  • Access Control $3,077M
  • Safe Multisig wallet Phishing Exploit / Access Control / Signer Phishing $1,635M

Full Leaderboard

Showing 351-400 of 3836 ranked incidents

Largest Web3 incidents by USD amount lost
Rank Project Amount Lost Date Chain Technique Attack Guide Source
351 zkLend $9.6M starknet Empty Market Exploit / Other / First Depositor Attack View →
352 BreedTech $9.4M - Rugpull
353 Cover Protocol $9.4M ethereum Incentives Function Mistake / Other / Arithmetic Error View →
354 MyAlgo $9.2M algorand Cloudflare Key Compromised / CDN Compromise View →
355 CoinTiger (PTT) $9.2M ethereum Key Leaked via Infrastructure
356 Moola Market $9.1M celo Price Oracle Attack / Other / Spot Price Manipulation Oracle Manipulation & Price Manipulation View →
357 Astra Nova $9.1M ethereum Private Key Compromised Access Control Attacks
358 Bonzo Finance $9.1M - - View →
359 Bonzo $9.1M hedera Oracle Issue / Spot Price Manipulation Oracle Manipulation & Price Manipulation View →
360 Yearn Finance $9.0M - Other View →
361 Yearn Ether $9.0M ethereum yETH stablepool Exploit / Incorrect Share Accounting View →
362 DCF $9.0M - Other View →
363 dYdX V3 $9.0M ethereum Price Manipulation Attack / Risk Parameter Abuse Oracle Manipulation & Price Manipulation View →
364 Impermax $9.0M ethereum, polygon Other / Private Key Compromised Access Control Attacks View →
365 Trade.io $9.0M - Access Control Access Control Attacks View →
366 Punk Protocol $8.9M ethereum Delegatecall Exploit / Other / Delegatecall Hijack Access Control Attacks View →
367 Safemoon $8.9M bsc Access Control Exploit / Access Control / Improper Access Control Access Control Attacks View →
368 Zoth ZeUSD $8.8M ethereum Private Key Compromised (Unknown Method) / Private Key Compromised Access Control Attacks View →
369 ERC20 Permit $8.8M - Phishing Phishing Attacks View →
370 Crema Finance $8.8M solana Access Control Exploit / Other / Improper Access Control Access Control Attacks View →
371 WOOFi Swap $8.8M arbitrum Price Oracle Manipulation / Flash Loan Attack / Spot Price Manipulation Flash Loan Attacks View →
372 Mt. Gox $8.8M bitcoin Improper Access Control Access Control Attacks
373 Mt. Gox $8.8M - Other View →
374 Ionic Protocol $8.6M mode Fake Collateral Exploit / Impersonation Scam Phishing Attacks View →
375 Platypus Finance $8.5M avalanche Flashloan Reentrancy Attack / Flash Loan Attack / Unknown Flash Loan Attacks View →
376 Term Labs $8.5M - Other View →
377 TermFinance Vaults $8.5M ethereum Malicious Proposal Flash Loan Attacks
378 Trust Wallet $8.5M bitcoin, ethereum, solana Private Key Compromised (Supply Chain Attack) / Access Control / Supply Chain Attack Access Control Attacks View →
379 Bunni V2 $8.4M ethereum, unichain Liquidity Distribution Function Exploit / Other / Rounding Error View →
380 ALEX $8.4M stacks malicious transfer() method / Caller Impersonation Access Control Attacks View →
381 Zoth $8.3M - Access Control Access Control Attacks View →
382 MakerDAO $8.3M ethereum Stale Oracle Price Oracle Manipulation & Price Manipulation
383 Blizz Finance $8.3M - Rugpull View →
384 Crypto DAO $8.2M bsc Improper Access Control Access Control Attacks
385 Gamma $8.2M ethereum Access Control Exploit / Arithmetic Error / Reentrancy Access Control Attacks View →
386 Haven Protocol $8.2M haven Other / Infinite Mint View →
387 bZx $8.1M ethereum Other View →
388 Coinsbuy $8.1M - - View →
389 Coinsbuy $8.1M ethereum, tron Access Control / Improper Access Control Access Control Attacks View →
390 IoTeX $8.0M ethereum Private Key Compromised / Access Control / Validator Key Compromised Access Control Attacks View →
391 LI.FI $8.0M - Other View →
392 Bittensor $8.0M - Private Key Compromised (Supply Chain Attack) / Access Control / Malware Access Control Attacks View →
393 HTX $8.0M ethereum Private Key Compromised (Unknown Method) / Access Control / Hot Wallet Key Compromised Access Control Attacks View →
394 BitKeep $8.0M - Phishing Phishing Attacks View →
395 Uniswap (Phishing Attack) $8.0M ethereum Phishing Phishing Attacks
396 Uniswap $8.0M - Phishing Phishing Attacks View →
397 Thorchain DEX $8.0M ethereum Refund Logic Exploit / Other / Withdrawal Logic Flaw View →
398 Nexus Mutual $8.0M ethereum Key Leaked via Infrastructure
399 Origin Protocol $8.0M ethereum Flashloan Reentrancy Attack / Flash Loan Attack / Reentrancy Flash Loan Attacks View →
400 LCX $7.9M ethereum Private Key Compromised (Unknown Method) / Access Control / Key Leaked via Infrastructure Access Control Attacks 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

$104B+ lost to preventable vulnerabilities. Master real exploit patterns and defense techniques with hands-on Web3 security training.