Abstract: The invention teaches at least one system and/or methods to protect humans and/or animals or plants (as targets) from bloodsucking or parasitic purposes by a variety of insects. Mosquitoes spread malaria that annually affects two hundred million people and results in two million deaths every year. This innovation will show a new and environmentally defensive approach against such attacks by using generated alternating electric fields, which create a kind of synthetic aura around a subject like an invisible shield. Combined means of frequencies, voltage levels or modulations influence the nervous system of attacking organisms to avoid or ignore the target or force them to escape.