Every lending protocol failure traces back to collateral that should not have been accepted or a price feed that could be pushed. Aave's defence is a risk framework that treats both as first-order engineering problems rather than governance afterthoughts, and eight years of results suggest it works.
The risk controls that matter
Supply and borrow caps limit how much of any asset can enter the system, so a collapse in a thinly traded token cannot generate unbounded bad debt. Isolation mode confines newly listed assets to borrowing only stablecoins with a debt ceiling. E-mode raises loan-to-value for correlated assets such as ETH and stETH, where liquidation risk is genuinely lower. Each of these was introduced after the sector learned an expensive lesson elsewhere.
Governance done properly
Independent risk providers publish analysis before parameter votes, with reasoning and data. Changes are timelocked. That is slow, and slowness has costs — Aave has occasionally been late to adjust in fast markets — but it is the only governance process in DeFi lending that consistently produces defensible decisions rather than reactive ones.
Oracles and the safety module
Pricing uses Chainlink feeds with fallback handling. The safety module, funded by staked AAVE, is a real backstop that can be drawn on to cover a shortfall, which distinguishes it from protocols whose insurance is a line in the documentation.
Who should use it
Anyone lending or borrowing who prioritises not losing money over maximising rate. Depositors chasing the highest yield will find better numbers at Morpho vaults or riskier venues, and should understand exactly what they are giving up.