I don't know if this is the correct forum but I have recently checked the activities of my Norton idle scans and have discovered that it is removing tracking cookies 'low risk' at least twice daily. It does not seem too much to worry about, but is there any way of finding out where these tracking cookies are from? Do other pc users have regular 'spies'? This is not to be confused with updates when a screen msg asks if I want to allow this and shows a risk assessment.
You can probably set Norton not to delete them automatically so that you can view them and delete them manually, but I wouldn't bother. I have Norton Internet security 2010 set to delete them automatically.