Issue
You have a trigger campaign using the "Visits Web Page" or "Clicks Link on Web Page" triggers, and you are seeing anonymous records in the Campaign Results.
Solution
Anonymous records can trigger campaigns that use the "Visits Web Page" or "Clicks Link on Web Page" triggers. These anonymous leads will go through the flow of the campaign. To prevent anonymous leads from entering your Visits Web Page or Clicks Link on Web Page trigger campaigns, add the filter "Email Address is not empty" to your campaign Smart List.