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“MAC Address Scrambling“- By name itself we can understand, instead of using burned-in address, the machines uses random MAC address every time. The machine/device changes MAC address regularly to improve security. MAC address is 48 bit hexadecimal digit which is burned in every electronic device has capability of “connectivity” such as mobile devices, smart TV, PC, etc. “Apple” added this feature to iPhones from iOS8 to protect user’s privacy.
So, how static MAC address causes some security issues? First thing caught in my mind is this
According to Edward Snowden, the National Security Agency has a system that tracks the movements of everyone in a city by monitoring the MAC addresses of their electronic devices. As a result of users being trackable by their devices’ MAC addresses, Apple has started using random MAC addresses in their iOS line of devices while scanning for networks.If random MAC addresses are not used, researchers have confirmed that it is possible to link a real identity to a particular wireless MAC address.