A method and system for securing group communication in a Machine-to-Machine (M2M) communication environment including a plurality of Machine Type Communication (MTC) groups, wherein each of the plurality of MTC groups includes a plurality of MTC devices. The method includes generating a unique group key for securing communication with MTC devices associated with an MTC group in an M2M communication environment, securely providing information on the unique group key to the MTC devices associated with the MTC group, and securely communicating at least one broadcast group message with the MTC devices using the unique group key information.