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Simple Epidemic Algorithm (SEA) is a social protocol used in the Pocket Switched Network (PSN) technology. SEA infects an entire population. We have defined a Secure Simple Epidemic Algorithm (SSEA) for PSN where a security condition controls the traffic. SSEA doesn’t infect a global population. As the Internet Of Things (IOT) is with no specific definition, we have proposed a new model of IOT. In this latter, PSN that uses the developed SSEA guarantees the exchange of information. To best understand, we have defined a small model with four communities and an “EXTERNAL”. Nodes traveling between communities have different security degrees. The security degree reflects the number of communities to which the node belongs and defines the security condition of SSEA. The exchange of information relies on the cooperative nodes. Supplying help and extra services in time and space identify the cooperation. In the best case, SSEA infects nodes with high security degrees and reduces the network communication cost.