>Wow. I don't know about on Windows, but MAC addresses are easily changeable - please don't do that (I know you're not, but there are plenty of low calibre IT admins on here who'll read that).
>And neither of the above is more than a slight annoyance for a lowly capable attacker.
You both miss the point somewhat... This is about employees bringing in devices, finding out the wifi password from someone and then connecting their own device to your wifi. Put on filtering by MAC address and bang this stops Frank in the warehouse being a dick on your network. Of course it will not stop attacks but then that wasn't what the article was about... Key 4 letters are BYOD and key words are 'at work' ....