There are several active scanners and protection programs that will notify you whenever some spyware enters into your system. If you have got spyware in your computer, then first thing you have to do is to run all your anti-virus and anti-spyware programs. If you do not have any on your computer, then there are several free programs available on the internet, which you can download and run.

To find out the best one, you can read the online reviews and believe recommendations from existing users.
After scanning your computer, you will be able to find the spyware that has entered into your system. After identifying it, you should make sure to delete them and also heal them. After that, you should also run registry cleaner so that all its remains are removed from your system. Finally, you can also call your Credit Card Company and bank to keep an eye on any suspicious transactions.