Harvesting energy and improving security in physical layer is now an approach that shows promise, which is securing information not only from eavesdropper without data encryption at upper layer but at the same time improves efficiency of the network. However, it through some new challenges like other person can trace the transmitted confidential message between the sender and final destination via relay. So, the idea to avoid this the transmitted power of signal should be enough large for harvesting energy at the same time it needs to be compact/small enough to prevent eavesdropping. This would be more difficult when relaying is applied. Considering things above discussed our work proposes two protocols/techniques i.e., Random Path Protocol selection and Best Path Protocol selection techniques. These techniques will improve the multipath network security for cooperative satellite and terrestrial communication system even in the presence of eavesdropper. Furthermore, we drive closed form expression and asymptotic expression of the likelihood of an outage for each method in the presence of eavesdropper. Whereas simulation results also plotted with exact and asymptotic results.