Trojan viruses, or simply trojans, are malware secretly bundled with other downloadable software or files. They act pretty much like the mythical Trojan Horse which was built to clandestinely transport a small team of infiltrators into the city of Troy and open the gates for the bigger invading force waiting in hiding outside.
Similarly, in the computer version, the bundled malware opens the system up to much larger threats. Note that we use the term ‘virus’ here as an all embracing term that includes all kinds of malware.
How do they get on your computer?
Being downloadable software, you may find trojans in email attachments, warez, computer software utilities, drivers, and codecs, among others. Usually, the programs and files that act as decoys can actually be used just like their legit counterparts. That way, you will hardly notice the trojan virus that has sneaked into your system along with them.
Why are trojans considered dangerous?
Because trojans typically come alongside other files, the creators of these evil programs can make them as sophisticated and as large (in terms of file size) as they want them to be. They presume you’ll be too distracted with the innocent files, programs or program features that come with them to notice the extra file that make up the trojan.
Once inside your computer system, they can alter its system registry. This will allow the trojan to perform sophisticated acts such as logging keystrokes; modifying, deleting, or even creating files; downloading or uploading files; stealing and transmitting stolen data; hijacking the system to make it part of a botnet; viewing the user’s current screen; and many others.
How can you prevent trojans from entering your system?
Since trojan viruses usually come from downloadable files and programs, it is best to be extra careful before hitting the download button. In fact, we strongly advise you to avoid illegal file sharing networks, pornographic sites, and websites full of freebies. These places are crawling with all sorts of malware.
How can you remove a trojan that’s already inside your system?
Although prevention is definitely better than cure, it’s always good to know how to eliminate a trojan once its already contaminated your system. Now, you can either remove the threats manually, in which case you may find numerous manual removal instructions for specific malware in sites like Spyware Fix, or you can perform an automatic removal through Spyware Doctor.
Either way, it’s good to know that there are ways to remove these extremely dangerous programs.