Google Analytics "to use this feature visit: Event-Tracking.com"

Question

Why am I seeing "to use this feature visit: Event-Tracking.com" along with my other Event tracking data? I searched the web but found no answers. What is it and why is it there? Using Universal(latest). Example event tracking for a download:

onclick="ga('send', 'event', 'Baseball', 'Download', '1977');"

I see analytic data for the above, but can't figure out why the "to use this feature visit: Event-Tracking.com" is posted too.

Answer 1

Eike's comment is the answer. Here is how to set the event filter.

1. In Google Analytics click Admin and then under the View column find Filters.
2. Add a new filter with Custom type.
3. Choose Exclude and in the option type "event" and select Event Category.
4. Paste in whatever garbage the spammers filled your account with.
5. Verify the filter to see if there are matches on your data set before saving the new filter. Note that any filters permanently delete the GA data from the account. Changes from applying a filter cannot be reversed.