The user can turn off these tracking codes, but only if they are looking for a way to do it. Take into consideration that the company or website owner probably doesn’t even know that the hosting firm added this code. Or, even if they see it, they may assume that its normal.
Here is an article that discusses the issue and how It was discovered at one host, Go Daddy.
Why is This a Concern
The extent of this problem is still to be determined. However, the problem does highlight a concern for privacy advocates as well as legal issues. The code is being used to gather data on users who visit the websites. They are most likely gathering location, browser type, date, time, IP address, and possibly some web history.
Using a shared hosting company always opens you up to some vulnerabilities in areas that you cannot control. So beware of who you are using and make sure you have someone check the website code to ensure it is all on the up and up.