A trojan is a piece of malware that allows unauthorized access to a computer. A trojan infection could be the result of an infected download or web page that installed the trojan on the system. If a trojan is not removed, private data and usage information could be transferred over the web. There are many different options for trojan detection and removal. These steps outline a few free and easy methods of scanning for trojans.
"AVG Free" is a powerful virus protection tool and malware scanner that can remove most infections. You can download "AVG Free" via the link in the "Resources" section of this article. During the installation process of "AVG Free," you may want to uncheck the "AVG Security Toolbar," as this feature can sometime use up valuable system resources. A fully updated "Full Scan" will check every file on your computer and should detect and remove the trojan automatically.