Re: BYOD - The other side of the coin
Companies that really care about security are using 802.1x. Unless your personal/private computer has a corporate certificate installed your WiFi or Ethernet connection is not going to be much use.
Heck, one place I worked even had 802.1x installed on the printers so you couldn't 'borrow' a printer's Ethernet jack like you could in the past. Just like a fax line for was great for long-distance calls when you could arrange 'approval' in time (yeah, that's it).