How to find this setting:
Protection Settings > Exception Lists > Programs/folders or Websites or Wireless connection
You can use this exception list to speed up scans by making them ignore specific files or folders that you already consider safe.
You can use this exception list to specify websites that should either always or never be blocked from opening.
You can also import the addresses of all the websites currently in your Microsoft® Internet Explorer® "Favorites" list.
Any wireless network identified as risky (networks that redirect your connection without encryption) or dangerous (networks that do not have an authentication process or a valid security certificate) that you have decided to trust will appear on this exception list. If you change your mind about trusting one of the networks, just mark the checkbox next to it and click the Remove button.