Data Miners (Tracking Cookies) are cookies that are used by two or more Web sites to track a user's Web habits for the purpose of providing the user with ads or other material that the user might be interested in.Similar to adware, data miners can collect a user's information for a third party recipient.
Solution:
The best solution is u scan ur system through HouseCall - Trend Micro's online virus scanner.
For that u visit this link:
http://housecall.trendmicro.com/