They are meant to be unique, and if they're being used to identify you as an account holder you're breaking TOS. (changing a MAC address at the system level is something network engineers will do to manage network/user security)Ĭan they be changed, yes, with either software or with a diagnostic tool. Sure in Linux and OS X you can tell the system to use a different address, the physically coded address' in the hardware is still the same, and if THEY are asked to authenticate they will provided their unique id number. Truly changing a MAC address is not an easy task. changing the MAC address on a cable modem means your device is trying to connect under a different user account as some cable companies (comcast) uses the MAC address as the only thing tied to your account).Ģ. Which on a low level means you're probably breaking the user agreements or terms of service. Basically as soon as you change the MAC address and try and use a fake one you're falsifying information.

This may or may not be illegal, that really depends on the device, and more importantly how its being used. 1 Changing the MAC address on a device is similar to altering the serial number on something.

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