Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
unsecured [ˈʌnsɪˈkjuəd] adj
unsecured creditor незастрахо́ванный кредито́р
unsecured loan необеспе́ченный заём#
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: