Your computer can become compromised from various activities. You can unknowingly install spyware or malware that collects your user information. To check is a computer has been compromised you will need to use a variety of methods.

A good indicator that your computer has been compromised is from its hard drive activity. Activity that occurs on a hard drive can be seen by the processor usage. If happen you see an abnormal spike occur with the processor on your computer, it may indicate hidden software that is running in the background.

Activity that occurs with your firewall or internet connection is another indication your computer could possibly be compromised. View the home page on your web browser to see it it has changed. If you have visited an infected web page, script may have executed that changed some of the settings.

Open the Task Manager on your computer to examine all of the running processes. Look for a program or running process that is not familiar. Unfamiliar programs or processes that are installed are a good sign that your computer has been compromised.

Scan your computer with an anti-virus program and an anti-spyware program regularly to prevent your computer system from intrusion.