Apparatus, system and method useful for machine to machine (M2M) communication cyber-attack detection and prevention, are provided. An embedded security bridge (ESB), operatively connected to at least one proximal machine and at least one M2M module. The M2M module is in communication with at least one remote machine, and configured to enable communication between at least one remote machine and at least one proximal machine through the ESB. The ESB includes: one or more inspection units, configured for communication analysis for identifying communication and/or content suspicious as malicious, and, one or more decision units operatively connected to the inspection unit. The decision unit is configured to perform at least one action based on analysis of at least one inspection unit. The ESB is configured to detect by means of the inspection unit and prevent by means of the decision unit cyber-attacks on the proximal machine, the remote machine, or both.