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So, as briefly explained it can open paths for harmful third parties or hackers to access your computer system from where they can execute scripts, modify files, remove programs and other things which will lead to a severely unstable system .One effect which causes the most concern and is something to chat about is the possibility of data theft. Once access has been granted to a hacker they can retrieve and steal and login data that relates to financial websites or other personal domains which could really hit you hard. Emails are another common method of distribution in which the hacker will attempt to infect a wide variety of computers on a network thereby allowing him to get remote access and ultimately control of those systems.
From here, they can easily watch your actions, capture keystrokes and possibly even watch every screen that is displayed on your system. With all this in mind it is best to download a free trojan cleaner application and check if your computer is infected today. Have a look at http://www.trojanremovers.info/
The signatures logs in these security tools give them the special ability to detect harmful content which will then be quarantined or removed automatically. Such programs are critical and should be utilized by most computer users especially in this day and age.One should be cautious if attempting to eliminate infections manually via registry modification because incorrect actions can result in severe problems for your PC.