You can and should do some things to get to the right place.
First, you can google the name of the mystery shopping company and "home" and I have every reason to believe you will get the correct site. Just make sure your spellings are correct. Second, you can use the link from a trusted site like this forum, or MSPA. Third, you can use add-ons in your browser like WOT - which gives me a warning when I attempt to navigate to a known "bad" site. Lastly, bookmarking the correct site for later access is always a good idea.
Happily shopping Rhode Island and nearby Massachusetts and Connecticut