Section 42-409 - Security interest restricted. Security deposit(a) Except as otherwise provided in subsection (b) of this section, a consumer lease or other record signed by the lessee in connection with the lease may not provide for the creation of a security interest in personal or real property of the lessee to secure the payment of obligations arising from the lease. A security interest created in violation of this section is unenforceable, but does not otherwise affect the validity of the lease.(b) A consumer lease may provide for: (1) A security deposit, advance lease payment or other prepayment;(2) A security interest in unearned insurance premiums or rebates of charges for a contract for services, or a service contract, extended warranty or maintenance agreement regarding the leased goods;(3) A security interest in the proceeds or benefits of insurance, or of a contract for services, service contract, extended warranty or maintenance agreement on the leased goods, except to the extent the proceeds or benefits represent reimbursement to the lessee for expenses incurred; and(4) A security interest in an accession to the leased goods.(c) This section does not preclude a holder from making a permissive filing of a financing statement under article 9 of the Uniform Commercial Code.(d) A holder is not required to pay interest on a security deposit, advance lease payment or other prepayment, but is required, within two weeks after the application of a security deposit, to account to the lessee in a record for the application of the security deposit.Conn. Gen. Stat. § 42-409