735 ILCS 5/4-205
The plaintiff, or his or her agent or attorney, shall also file with such complaint a bond, payable to the owner of the craft to be attached, or, if unknown, to the unknown owners thereof, in at least double the amount of the claim, with security to be approved by the court, conditioned that the plaintiff shall prosecute his or her action with effect, or, in case of failure therein, will pay all costs and damages which the owner or other person interested in such water craft may sustain, in consequence of the wrongful suing out of such attachment, which bond may be sued by any owner or person interested, in the same manner as if it had been given to such person by his or her proper name. Only such persons shall be required to join in such suit as have a joint interest. Others may allege breaches and have assessment of damages, as in other actions on penal bonds.
735 ILCS 5/4-205