What does it mean to perfect a security interest?

To perfect a security interest means to take the necessary legal steps to make the security interest valid and enforceable against third parties. This typically involves filing a financing statement with the appropriate government office, such as the Secretary of State's office or the county clerk's office. Filing a financing statement gives public notice of the security interest and protects the secured party's rights to the collateral in the event of default. Other means of perfection may include possession of the collateral, control over the collateral, or automatic perfection due to the type of collateral and the parties involved.