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.

  • $101B+

    Total Value Lost

  • 3299

    Incidents Tracked

  • 74

    Chains Affected

  • 80

    $100M+ Incidents

Top 10 Biggest Hacks

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  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 $8,051M
  • bitcoin $4,415M
  • bsc $2,657M
  • solana $1,605M
  • polygon $1,512M

Top Techniques by Losses

  • Other $61,553M
  • Rugpull $15,684M
  • Access Control $4,030M
  • Private Key Compromised (Brute Force) $3,500M
  • Safe Multisig wallet Phishing Exploit / Access Control $1,635M

Full Leaderboard

Showing 1051–1100 of 3299 ranked incidents

Largest Web3 incidents by USD amount lost
Rank Project Amount Lost Date Chain Technique Attack Guide Source
1051 Cozy V2 $427K optimism Insufficient Sender Verification Exploit View →
1052 BGE $427K - Rugpull View →
1053 Aethir $423K bsc Acces Control Exploit / Other Access Control Attacks View →
1054 Evoq Finance $420K bsc Advanced Persistent Threat (APT) attack / Access Control Access Control Attacks View →
1055 Unlock Protocol $416K - Access Control Access Control Attacks View →
1056 RAI Finance $414K - Other View →
1057 Dango $410K dango Donate Negative Amounts Hack View →
1058 Nut2Earn $410K - Rugpull View →
1059 Fake EigenLayer $405K - Rugpull View →
1060 Syndicate $400K - Access Control Access Control Attacks View →
1061 MetaPool $400K - Other View →
1062 Cardex $400K abstract Private Key Compromised (Session signer) Access Control Attacks View →
1063 Fake Polyhedra Network $400K - Rugpull View →
1064 HEGE coin $400K - Rugpull
1065 WePiggy $400K - Other View →
1066 BlackWallet $400K - Access Control Access Control Attacks View →
1067 Leverage X $400K ethereum Rugpull View →
1068 Cezar Hard Fork $399K - Rugpull View →
1069 phishing $394K - Phishing Phishing Attacks View →
1070 Silo V2 $392K arbitrum Misconfigured Oracle Exploit Oracle Manipulation & Price Manipulation View →
1071 Ploutos Money $390K ethereum Rugpull / Oracle Misconfiguration Exploit / Misconfigured Oracle Exploit Oracle Manipulation & Price Manipulation View →
1072 Dollar $383K - Rugpull View →
1073 MetaFinanceDAO $380K - Rugpull View →
1074 Impermax V3 $380K base Zero-Rate Hack / Other View →
1075 DEFIBase $379K ethereum Rugpull View →
1076 unshETH $375K - Access Control Access Control Attacks View →
1077 PREMINT | NFT $375K - Access Control Access Control Attacks View →
1078 Linda Yaccarino $375K - Rugpull View →
1079 Ploutoz Finance $372K - Flash Loan Attack Flash Loans Attacks View →
1080 opyn $371K - Other View →
1081 Do Right $371K - Rugpull View →
1082 Themis Protocol $370K arbitrum Flashloan Price Oracle Attack / Flash Loan Attack Flash Loans Attacks View →
1083 Cauldron $370K - Flash Loan Attack Flash Loans Attacks View →
1084 Bitcoin Rain $370K - Other View →
1085 ForceDAO $367K - Other View →
1086 XSTABLE Protocol $367K - Rugpull View →
1087 Custom Lending Pool $366K - Other View →
1088 Smurfs Coin $366K - Rugpull View →
1089 Hype Bet Finance $364K ethereum Rugpull View →
1090 Miss Universe NFT $360K - Rugpull View →
1091 bZx $356K ethereum Flash Loan Attack Flash Loans Attacks View →
1092 SIR $355K ethereum Transient storage collision / Other View →
1093 Fake ether.fi $354K - Rugpull View →
1094 PolBase Cash $354K ethereum Rugpull View →
1095 Edel Finance $353K - Oracle Issue Oracle Manipulation & Price Manipulation View →
1096 Ribbon Finance $351K - Phishing Phishing Attacks View →
1097 Kalax $350K blast Drain Vaults View →
1098 Sumer.Money $350K - Flash Loan Attack Flash Loans Attacks View →
1099 Zircon Gamma $350K bsc, moonriver Flashloan Pool Shares Exploit Flash Loans Attacks View →
1100 Ooki $350K ethereum Flashloan Slippage Attack Flash Loans 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

$101B+ lost to preventable vulnerabilities. Master real exploit patterns and defense techniques with hands-on Web3 security training.