Just like the original Trojan Horse that was built by the Greeks, the Trojan Horse Virus for your computer is actually something that is evil and bad concealed within something that seems good and positive. For anyone that might not know, a quick history lesson, the original Trojan Horse was given as a gift to the City of Troy by the Greeks who were losing the war but within this large wooden horse that was rolled into the gates of Troy was the Greek Army that came out at night when no one was looking and destroyed the city.
The computer virus variety of the Trojan Horse was first discovered in 2002 within sendmail and OpenSSH packages both included the Trojan Horse. It was done by a hijacker that broke into the distribution sites and replaced the software with his own damaged and infected ones. That is one way that your system can be given a Trojan, through software downloads and installation.
However, the most common way that users are infected with a Trojan program is through the spreading of it through emails. The sender will send it to the recipient within an email attachment that might say something like ?nudegirls.jpg? or something along those lines that will make you curious and open the file.
Another increasingly popular way that Trojan Horses have been spread to users is through the ever increasing instant messenger programs such as Yahoo Messenger, AIM, ICQ, MSN messenger, and IRC. The one key to remember about Trojans is that they have to be triggered by some mechanism and will not spread themselves. For example, you can have one in your email but you do not open the link then it will not mess with your system.
A Trojan Horse, once on your system can do several things. First, it has the ability to completely take over your system and not give you access to any of your files. Next, it could possibly search your computer and monitor your usernames and passwords to various sites and even has the chances of getting your credit card numbers and sending all this information back to the creator.
The best way to keep your system from receiving any type of Trojan Horse is that of prevention. Never open files sent you by people you do not know because chances are that not only are these messages SPAM email but will contain some sort of link or file that will create a Trojan on your machine. It is fine to run anti-virus program on a daily basis but the fact is that Trojans are created so often that your definitions for viruses might not recognize the newest Trojans that have been created.
Trojans are not the kind of program that you want to speculate with so you should get your computer checked right away and continue to be leery of opening files by users you do not trust.
At some point during school you probably learned about Odysseus's brilliant plan to sneak soldiers into his enemy's city in the guise of a magnificent statue of a horse-the famous Trojan horse, to be exact. It's a great story, and the plan was such a great tactical maneuver that, unfortunately, hackers have adapted it to suit their malicious attacks against your computer.
A Trojan horse, in the computer world, is a seemingly harmless program that delivers an unwanted, unsafe program that can have dire consequences. Unlike a computer virus, though, a Trojan horse relies on the user to complete some sort of action that triggers the program. So, like Odysseus's Trojan horse being pulled inside the city walls, you have to open or install the item to release the harmful program, like Odysseus's soldiers swarming out of the statue.
Trojan horses come in two common forms. The first is as a program that, though normally useful, has been altered by a hacker who has entered in dangerous coding that will initiate when the program is used. For example, you might install a program on your PC that tells you what the weather forecast for your town is. That seems like a pretty useful tool, and it would be if a hacker hadn't used it as a disguise for programming that will slow your computer down or cause a number of other damaging effects.
The other type of Trojan horse is an independent program that seems to be one thing, like a picture or game. However, when you run the program, you're tricked into performing some task that allows the Trojan to initiate. For example, the "game" might open a box that asks if you want to install a certain component of the game. Regardless of whether you click "yes" or "no," the program will deliver the payload, or effects, of the Trojan horse.
Trojan horses can cause a number of different problems for you and your computer. One particularly dangerous problem is the theft of information. Some Trojan horses can trick your computer into marking a fraudulent site as one that is safe. So, you might think you're entering personal information, such as passwords or credit card numbers, into a banking site. However, the recipient of the information isn't your bank-it's a hacker.
Similarly, Trojan horses can be used to actually record the keys you strike on your keyboard so that hackers get a readout of user names and passwords you type. Or, they might dig through your computer to find and copy, change, or delete certain files.
Trojan horses might also cause seemingly minor annoyances, like pop-ups. Many of these pop-ups aren't designed to just annoy you, though; they're meant to trick you into clicking on them and accessing a fraudulent website.
Fortunately, when you know what Trojan horses are and how they work, there are many steps you can take to protect yourself. First, be mindful of how you communicate online, including the emails you open and where you post your email address. Never use your primary email address on large Internet directories, like sites used for job searches.
If you receive an email from an email address you don't recognize, don't open it. Try to find out who the message is from first and, if you can't, simply delete it; a missed message that was legitimate is much less of a threat than the dangers it can open your computer to.
When you set up your email preferences, don't allow your computer to automatically open attachments. Trojan horses frequently arrive as attachments to messages, and they might even appear to be from someone you know since many hackers are able to steal addresses right out of the email address book.
One of the most important things you can do to protect yourself is to purchase and use good virus protection software and a firewall. Because new threats pop up every day, it's imperative that you update your software frequently. Most companies offering these types of software allow free update downloads or a subscription service for updates.
So, now you know that a Trojan horse isn't just a statue from an ancient story, it's a real threat. It's up to you to take the steps that are necessary to protect your computer and your privacy.
Both Andrew Wroblewski & James Angell are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Andrew Wroblewski has sinced written about articles on various topics from Advertising Guide, Kitchen Home Improvement and Family. When not on his soapbox, Andrew Wroblewski is doing battle with the thousands of spyware programs that can affect you via his and. Andrew Wroblewski's top article generates over 8100 views. to your Favourites.
James Angell has sinced written about articles on various topics from PPC Advertising, SEO Search Engine Optimization and Adware. While surfing the internet I found "XoftSpySE" which did an excellent job cleaning up and optimizing my PC. This program saved me a lot of time and frustration by getting rid of some high risk items that found their way into my computer. Get a free scan a. James Angell's top article generates over 3600 views. to your Favourites.