I am running a test to check encryption security on xbee S2C pro modules. I am using 3 xbee pro s2c modules connected to my PC (Serial terminal)via USB to XBEE converter(http://www.nex-robotics.com/products/wireless-devices/xbee-usb-wireless-module.html).
All modules are resettled on factory default settings.
I have enabled EE parameter of all xbees (Xbee1,2 and 3)and i have set specific key for only two xbees(xbee1 and xbee2). For third xbee(xbee3) i have set another key.
Now when xbee1 and xbee2 is communicating with each other, sending any data from xbee3 is altering data received by xbee1 and xbee2 (serial terminal). My question is if xbee1 and 2 have specific key which is not known by xbee3 then is it possible for xbee3 to attack and alter communication between xbee1 and xbee2. How to avoid this case.
All i want is to stop xbee3 from altering xbee1 and xbee2's communication.