Gene Bransfield's Warkitteh on his cat Coco  Forget Trojan
horses -- it's the cats you have to worry about. Security
engineer Gene Bransfield has developed WarKitteh, a tech-laden
collar that turns feline companions into scouts for WiFi
hackers. The innocuous-looking accessory hides a Spark Core
board that maps wireless networks and their vulnerabilities
wherever the pet wanders. If used in the field, the technology
would be pretty sneaky; the cat stalking mice in your backyard
could represent the prelude to an attack on your wireless
router.  Thankfully, Bransfield doesn't plan to weaponize the
Siamese next door any time soon. WarKitteh was developed on a
lark, and it isn't getting much more exposure than a panel at
the Defcon hacking conference. However, the experiment in pet-
based network penetration also serves as a friendly reminder to
lock down your home's WiFi access point. The engineer discovered
that many of his neighbors were either using weak security, or
none at all -- it wouldn't have taken much