Confessions of a Wi-Fi Thief
Michelle Shildkret from Time wrote in to tell us about a story about "the ethics of stealing Wi-Fi. Many of us been guilty of the same crime at one point or another — according to the article, 53% of us at least. But how guilty do we really feel? As it is officially a crime to steal wi-fi (Title 18, Part 1, Chapter 47 of the United States Code, which covers anybody who 'intentionally accesses a computer without authorization or exceeds authorized access')."
It depends from country to country:
Ahh.. the logic of law.
Here is a link to the actual law:
http://www.law.cornell.edu/uscode/html/uscode18/usc_sec_18_00001030----000-.html
In addition to "intention" there seems also to be a requirement for damage or fraud, or revealing atomic secrets. I don't think it is obvious that using a wi-fi router based on a DHCP reply is improper under the law, although the syntax of the law is complex. Walking up the front walk of a home to ring the doorbell isn't necessarily trespassing, even without permission.