๐ŸŒ‰ Bridge Attack Scenario

Learn from billion-dollar bridge hacks

๐Ÿ’ฅ Major Bridge Exploits

Learn from history's biggest bridge hacks. These case studies reveal common patterns, attack methodologies, and critical security failures.

Total Stolen
$2.3B+

Top 5 attacks

Timeframe
2021-22

18 month period

Recovery Rate
31%

$727M recovered

๐Ÿ“š Case Study Explorer

Select a major exploit to see the complete timeline, attack method, and lessons learned.

๐ŸŽฎ

Ronin Bridge

๐Ÿ“… March 2022โ€ข๐Ÿ”— Ethereum โ†” Ronin
$625M
stolen
Attack Type
Validator Compromise
Assets Stolen
173,600 ETH + 25.5M USDC
Attack Timeline:
๐Ÿ”
Reconnaissance
Attackers identified 9-validator system (5/9 threshold)
๐ŸŽฃ
Infiltration
Phishing attack on Sky Mavis employee via fake job offer
๐Ÿฆ 
Escalation
Malware installed, gained access to 4 validator keys
๐Ÿ”“
Compromise
Used DAO approval to access 5th validator (Axie DAO)
๐Ÿ’ธ
Execution
Signed withdrawals with 5/9 validators over 6 days
๐Ÿšจ
Discovery
Detected when user reported withdrawal issues
Key Lessons:
  • โœ“Never reuse validator keys across systems
  • โœ“Monitor all withdrawal transactions in real-time
  • โœ“Separate development and production systems
  • โœ“Implement withdrawal limits and delays
Funds Recovered:$30M (5% recovered)

๐ŸŽฏ Common Patterns

โฑ๏ธ

Speed of Execution

Most attacks executed in under 1 hour. Nomad was completely drained in just 4 hours by 300+ copycat attackers.

๐Ÿ”

Discovery Delays

Ronin breach went undetected for 6 days. Detection systems failed to alert on abnormal withdrawal patterns.

๐Ÿ’ฐ

Laundering Challenges

Large hacks difficult to liquidate. BNB attacker only moved $136M before chain halt. On-chain tracing effective.

๐Ÿค

Recovery Outcomes

Recovery highly variable: Poly 100% (whitehat), BNB 77% (halt), Wormhole 100% (bailout), others near 0%.

๐Ÿ’ก Security Insight

All five attacks exploited different vulnerabilities, showing bridges face threats across multiple dimensions. No single security measure can protect against all attack vectorsโ€”defense in depth is essential.

โ† Attack Vectors