Flash Loan Attack
Flash Loan Attack: Exploiting DeFi with Borrowed Capital
Flash loan attacks use uncollateralized loans to exploit vulnerabilities in DeFi protocols for profit extraction. They're like using borrowed money to pull off elaborate heists in seconds.
A flash loan attack is an exploit that uses flash loans to manipulate DeFi protocols, typically by borrowing large amounts, executing complex transactions to extract value, and repaying the loan within the same transaction. These attacks can drain millions from protocols in minutes.
How Flash Loan Attacks Work
Capital acquisition through flash loans provides attackers with millions in cryptocurrency without requiring collateral or credit.
Exploit execution manipulates protocol mechanics, price oracles, or governance systems using the borrowed capital as leverage.
Profit extraction captures value through arbitrage, governance manipulation, or protocol vulnerabilities before repaying the flash loan.
[IMAGE: Flash loan attack sequence showing borrow → manipulate → extract value → repay → profit, all in one transaction]
Real-World Examples
- bZx attacks that manipulated price oracles using flash loans to create artificial arbitrage opportunities
- Harvest Finance exploit that drained $24 million through flash loan-enabled yield farming manipulation
- PancakeBunny attack using flash loans to manipulate token prices and extract protocol rewards
Why Beginners Should Care
DeFi risks from sophisticated attacks that can drain protocol funds and affect user deposits and investments.
Protocol evaluation importance of considering flash loan attack vectors when assessing DeFi platform security.
Market impact as successful attacks often cause significant price volatility and confidence loss in affected protocols.
Related Terms: Flash Loan, DeFi, Exploit, Oracle Manipulation