Tinkernut demonstrates how to crack a wifi connection, as well as how to better secure your own personal connection. Also included in the video gallery is Tinkernut's previous tutorial on the same subject.
LifeHacker posted a great detailed text guide to accompany the second video below, along with these words of advice:
"Knowledge is power, but power doesn't mean you should be a jerk, or do anything illegal. Knowing how to pick a lock doesn't make you a thief. Consider this post educational, or a proof-of-concept intellectual exercise."
Keep Your Connection Secure Without a Monthly Bill. Get a lifetime subscription to VPN Unlimited for all your devices with a one-time purchase from the new Gadget Hacks Shop, and watch Hulu or Netflix without regional restrictions, increase security when browsing on public networks, and more.
Other worthwhile deals to check out: