Wi-Fi Piggybacking Widespread
BaCa sent in this article about stealing network access that opens, "Sophos has revealed new research into the use of other people's Wi-Fi networks to piggyback onto the internet without payment. The research shows that 54 percent of computer users have admitted breaking the law, by using someone else's wireless internet access without permission." Of course, online polls being what they are, the results are hardly a plank for a full investigation, but a good share of the answerers did 'fess up to it as well.
The article asserts that logging onto someone's AP without their permission is "breaking the law", but is that really clear? Do I have to explicitly ask for permission before I walk into a restaurant? Of course not -- there's a reasonable expectation that there are no barriers to my entry, so I'm allowed (even invited) in. But, while I think physical analogies to computer situations can be very misleading, in the real world entry becomes illegal when you've had to defeat some protection mechanism (a lock) to get in.
So, to summarize: I feel like cracking someone's WEP key to get on their net is pretty damn illegal. But I don't think hopping onto an open net is unsecured. In fact, the fact that it's open may be interpreted as a sign that the owner intends to allow open access!
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Educational microcontroller kits for the digital generation.
I would say that the beacon and authentication process would communicate that permission is granted:
Access Point Hey everyone, I'm open for business!
My Adapter Can I have permission to join your network?
Access Point Sure! Here's an IP!