Automated Stop-Loss is a product offered by that allows you to prevent liquidations on your Vaults if the collateralization ratio falls too low.

You can set the minimum collateralization ratio you're willing to accept on your Vault, and if your Vault's ratio is at or below this level, a Stop-Loss action is triggered. You can configure this action to close your Vault to collateral or to Dai, therefore preventing further losses if the collateral price goes down.