Webstats can be using to monitor the traffic to a specific website.
Log into Plesk panel.
Click on subscriptions.
Select the Domain name
Click on the Website and Domains Tab
Click on Hosting Settings.
Select the required website statistics - or none if no statistics required.
If you wish to protection the domain stats folder ensure password-protected is ticked.
Accessing the websites statistics
url : http://example.org/plesk-stat/webstat
If password protection has been enabled you will need to enter the FTP username and password.