Flash Loan Attack

A flash loan attack is a sophisticated exploit where an attacker uses uncollateralized, instant loans to gain massive capital for a short duration to manipulate a market. By borrowing large amounts of tokens within a single transaction block, the attacker can influence prices, trigger liquidations, or drain liquidity pools.

The loan must be repaid within the same transaction, meaning the attacker takes no risk of holding the asset long-term. This mechanism, while designed for legitimate arbitrage and refinancing, has become a primary tool for malicious actors.

It demonstrates the high level of technical risk present in programmable money. Protocols must implement safeguards like multi-block price averages to defend against these rapid manipulations.

Investors should be aware that flash loans allow even small actors to cause large-scale market disruptions. It is a unique feature of the crypto-financial landscape that requires constant vigilance.