Abstract: Security threats in multicast group communication are inevitable, which makes threat modeling for any protocol, a must-do job. Threat modeling involves assessing the threats and vulnerabilities of a system and providing necessary mitigation measures. This study studies the response of the P-LeaSel ‘p’ LEAder SELection Multicast group communication model in accordance with the STRIDE threat standard. The study also compares the efficiency of P-LeaSel in response to threats with and without mitigation for multicast group communication.