If you are traveling, you likely want to stay at a hotel that offers free WiFi internet access. However, it looks like at least one New York City hotel does something with their free WiFi connection that's pretty sneaky. The
New York Times reports that web engineer Justin Watt recently found that when he surfed the net on the WiFi network of Manhattan's Courtyard Marriott hotel, he discovered that the websites he viewed on his laptop contained some hidden code that were not there before.
As it turns out, the hotel's WiFi network was putting in that extra code on those websites, which could be used to display ad banners. While no actual ads were seen by Watt, the hotel's WiFi network was evidently putting in ad code to sites that had no prior knowledge or permission for such activities.
Sources.
