Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » T »

Trojan horse

A destructive program that masquerades as a benign application. Unlike viruses, Trojan horses do not replicate themselves but they can be just as destructive. One of the most insidious types of Trojan horse is a program that claims to rid your computer of viruses but instead introduces viruses onto your computer.

The term comes from the a Greek story of the Trojan War, in which the Greeks give a giant wooden horse to their foes, the Trojans, ostensibly as a peace offering. But after the Trojans drag the horse inside their city walls, Greek soldiers sneak out of the horse's hollow belly and open the city gates, allowing their compatriots to pour in and capture Troy.

Trojan horses are broken down in classification based on how they breach systems and the damage they cause. The seven main types of Trojan horses are:

Also see The Difference Between a Virus, Worm and Trojan Horse  in the Did You Know? section of Webopedia.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the current devices that we use today. Read More »

Small Business Marketing's Greatest Hits

The following compilation of small business marketing tips highlights some of the expert advice published over at Small Business Computing. Read More »

13 Best Free Android Apps

From secure messaging to document editing, our top free must-have apps have been rated, reviewed and named the best free Android apps of 2015. Read More »

QUICK REFERENCE
5 Best Cloud Storage Services

With cost and security in mind, we look at five cloud storage options that will suit the needs of most home and SMB owners. Read More »

Windows 10 Tips for Desktop PC

Five basic tips to help you customize Windows 10 on your desktop PC. Read More »

29 Free Android Apps for Cash-Strapped Students

From wacky alarm clocks to lecture hall tools and after class entertainment, these Android apps are a good fit for a student's life and budget. Read More »