A method for creating jamming within an area and a jamming arrangement. The arrangement includes a plurality of distributed jammers. The jammers include a transmitter, receiver and logic unit and communication is established with the jammers. Communication is established directly between jammers included in the arrangement and information that is to be transmitted from one jammer to the other jammers is transmitted by superposing the information on the jamming signal that is produced by the jammers. An autonomous distributed arrangement is achieved that is difficult to disable and that can be made relatively simple, reliable and cost-effective.