How Price-Manipulation Attacks Drain DeFi Lending Protocols

Decentralized finance lending protocols automate borrowing through smart contracts, allowing users to deposit collateral and access liquidity without traditional intermediaries. But this efficiency depends on reliable price information. Attackers can exploit weaknesses in pricing systems and turn temporary market distortions into permanent bad debt.

The core issue is not necessarily a hacked oracle. An oracle can work correctly while reporting a price from a market that an attacker has deliberately distorted. If a lending protocol relies on a thin liquidity pool or narrow pricing window, a relatively large trade can temporarily change the value recognized by the smart contract.

How Price-Manipulation Attacks Exploit DeFi Lending

Consider a token trading at $10. If an attacker pushes its observable price to $50, a lending protocol may treat the same collateral as five times more valuable. The attacker can then borrow liquid assets such as stablecoins, ETH or BTC against the inflated position.

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