Winter 2010, I taught again the course COMP 4203 – Wireless Networks and Security. I have to admit that I had exceptional students in the class. This post is about a project, realized by the team Michael Nemat and Nicholas Osborne, that I found really interesting. They have completed a wireless network site survey for the downtown area and a residential area of Ottawa. The number of sites that were surveyed is striking. For the downtown area, 1383 networks were found. Here is a Google map of downtown Ottawa showing positions of found wireless network sites.

They generated statistics:

It is interesting to note that in the downtown area, 46% of the networks use no encryption or WEP. In the residential area, 51% of the networks use no encryption or WEP. It is well established that WEP is insecure and that wireless WEP networks expose their traffic to high risk of eavesdropping.
You can read their full report
here.
Thanks Michael and Nicholas for making me read good stuff!