Flash Loan Attacks Stole $1.2 Billion from DeFi in Four Years

Flash loan attacks have been a significant threat to the decentralized finance (DeFi) ecosystem, siphoning off approximately $1.2 billion between 2020 and 2024, according to a recent study. These attacks exploit vulnerabilities in DeFi protocols by borrowing large sums of cryptocurrency without collateral and manipulating prices, often leaving projects financially drained.

The study highlights that while DeFi has grown rapidly, offering innovative financial services without intermediaries, it has also become a target for sophisticated hackers. Flash loans, which allow users to borrow and repay funds in a single transaction, have been weaponized to exploit these systems. The $1.2 billion loss underscores the need for enhanced security measures and better risk management in the DeFi space.

The research emphasizes that the majority of these attacks have occurred over the past four years, indicating a rising trend in such malicious activities. As DeFi continues to evolve, the study suggests that developers and users must remain vigilant to protect against these increasingly common threats.