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

  • 3301

    Incidents Tracked

  • 74

    Chains Affected

  • 80

    $100M+ Incidents

Hall of Infamy

Top 10 Biggest Hacks

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  2. 🥈

    Mantra

    $5.50B

  4. #4

    LuBian

    $3.50B

    bitcoin

  8. #8

    Thodex

    $2.00B

  10. #10

    Finiko

    $1.50B

Breakdown

Where the Largest Losses Concentrate

Top Chains by Losses

  • ethereum $8,051M
  • bitcoin $4,415M
  • bsc $2,654M
  • solana $1,605M
  • polygon $1,512M

Top Techniques by Losses

  • Other $61,553M
  • Rugpull $15,684M
  • Access Control $4,026M
  • Private Key Compromised (Brute Force) $3,500M
  • Safe Multisig wallet Phishing Exploit / Access Control $1,635M
All Incidents

Full Leaderboard

Showing 3301–3301 of 3301 ranked incidents

Largest Web3 incidents by USD amount lost
Rank Project Amount Lost Date Chain Technique Attack Guide Source
3301 ABTC — ethereum Honeypot — View →

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

Context

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.

Common Questions

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.

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