#24 · 2026-08-30 · Legal term
Attachment
Attachment makes a security interest enforceable against the debtor concerning the collateral. UCC § 9-203 generally requires value, debtor rights or transfer power, and an authenticated security agreement or an authorized substitute such as possession or control.
Rule to remember
Attachment is the point at which a security interest becomes enforceable against the debtor with respect to particular collateral.
Key elements and checks
- Value has been given.
- The debtor has rights in the collateral or power to transfer rights.
- An authenticated descriptive security agreement, or an applicable possession or control alternative, supports enforceability.
In the source’s words
“A security interest attaches to collateral when it becomes enforceable against the debtor”
UCC § 9-203(a)
Attachment and perfection are distinct. Perfection generally concerns effectiveness against third parties and may require filing, possession, control, or another method.