Once in default, as defined by the creditor in the security agreement, occurs, the creditor can: repossess the collateral by self-help (depending on state law) or with the aid of a court order, dispose of the collateral by public or private foreclosure sale, retain the collateral in satisfaction of the debt, terminate the debtor’s right of redemption, add the costs of repossession and foreclosure to the unpaid balance of the debt, and pursue the debtor for any remaining unpaid balance or deficiency.